Release minimap2-2.18 (r1015)

prepare for release
r1013: changed to a more accurate similarity est
2026-09-26 00:48:12 +08:00 · 2021-04-09 13:33:34 -04:00 · 2021-04-09 13:18:56 -04:00 · 2021-04-08 13:57:53 -04:00 · 2021-04-07 23:31:31 -04:00 · 2021-04-05 11:55:10 -04:00
32 changed files with 987 additions and 456 deletions
@@ -0,0 +1,3 @@
+[submodule "lib/simde"]
+	path = lib/simde
+	url = https://github.com/nemequ/simde.git
@@ -6,6 +6,10 @@ matrix:
    - language: c
      compiler: clang
      script: make
+    - arch: arm64
+      language: c
+      compiler: gcc
+      script: make arm_neon=1 aarch64=1
    - language: python
      python: "2.7"
      before_install: pip install cython
@@ -15,6 +19,6 @@ matrix:
      before_install: pip install cython
      script: python setup.py build_ext
    - language: python
-      python: "3.6"
+      python: "3.9"
      before_install: pip install cython
      script: python setup.py build_ext
@@ -2,25 +2,13 @@ CFLAGS=		-g -Wall -O2 -Wc++-compat #-Wextra
 CPPFLAGS=	-DHAVE_KALLOC
 INCLUDES=
 OBJS=		kthread.o kalloc.o misc.o bseq.o sketch.o sdust.o options.o index.o chain.o align.o hit.o map.o format.o pe.o esterr.o splitidx.o ksw2_ll_sse.o
-OBJS_SSE=	ksw2_extz2_sse41.o ksw2_extd2_sse41.o ksw2_exts2_sse41.o ksw2_extz2_sse2.o ksw2_extd2_sse2.o ksw2_exts2_sse2.o
-DISPATCH_FLAG=-msse4.1
 PROG=		minimap2
 PROG_EXTRA=	sdust minimap2-lite
 LIBS=		-lm -lz -lpthread

 ifeq ($(arm_neon),) # if arm_neon is not defined
 ifeq ($(sse2only),) # if sse2only is not defined
-ifeq ($(avx512),)
-ifeq ($(avx2),)
-	OBJS+=$(OBJS_SSE) ksw2_dispatch.o
-else
-	OBJS+=ksw2_extd2_avx2.o $(OBJS_SSE) ksw2_dispatch.o
-	DISPATCH_FLAG=-mavx2
-endif
-else
-	OBJS+=ksw2_extd2_avx512.o ksw2_extd2_avx2.o $(OBJS_SSE) ksw2_dispatch.o
-	DISPATCH_FLAG=-mavx512bw
-endif
+	OBJS+=ksw2_extz2_sse41.o ksw2_extd2_sse41.o ksw2_exts2_sse41.o ksw2_extz2_sse2.o ksw2_extd2_sse2.o ksw2_exts2_sse2.o ksw2_dispatch.o
 else                # if sse2only is defined
 	OBJS+=ksw2_extz2_sse.o ksw2_extd2_sse.o ksw2_exts2_sse.o
 endif
@@ -79,17 +67,11 @@ ksw2_extz2_sse41.o:ksw2_extz2_sse.c ksw2.h kalloc.h
 ksw2_extz2_sse2.o:ksw2_extz2_sse.c ksw2.h kalloc.h
 		$(CC) -c $(CFLAGS) -msse2 -mno-sse4.1 $(CPPFLAGS) -DKSW_CPU_DISPATCH -DKSW_SSE2_ONLY $(INCLUDES) $< -o $@

-ksw2_extd2_avx2.o:ksw2_extd2_sse.c ksw2.h kalloc.h
-		$(CC) -c $(CFLAGS) -mavx2 $(CPPFLAGS) -DKSW_CPU_DISPATCH $(INCLUDES) $< -o $@
-
-ksw2_extd2_avx512.o:ksw2_extd2_sse.c ksw2.h kalloc.h
-		$(CC) -c $(CFLAGS) -mavx512bw $(CPPFLAGS) -DKSW_CPU_DISPATCH $(INCLUDES) $< -o $@
-
 ksw2_extd2_sse41.o:ksw2_extd2_sse.c ksw2.h kalloc.h
-		$(CC) -c $(CFLAGS) -msse4.1 -mno-avx2 $(CPPFLAGS) -DKSW_CPU_DISPATCH $(INCLUDES) $< -o $@
+		$(CC) -c $(CFLAGS) -msse4.1 $(CPPFLAGS) -DKSW_CPU_DISPATCH $(INCLUDES) $< -o $@

 ksw2_extd2_sse2.o:ksw2_extd2_sse.c ksw2.h kalloc.h
-		$(CC) -c $(CFLAGS) -msse2 -mno-sse4.1 -mno-avx2 $(CPPFLAGS) -DKSW_CPU_DISPATCH -DKSW_SSE2_ONLY $(INCLUDES) $< -o $@
+		$(CC) -c $(CFLAGS) -msse2 -mno-sse4.1 $(CPPFLAGS) -DKSW_CPU_DISPATCH -DKSW_SSE2_ONLY $(INCLUDES) $< -o $@

 ksw2_exts2_sse41.o:ksw2_exts2_sse.c ksw2.h kalloc.h
 		$(CC) -c $(CFLAGS) -msse4.1 $(CPPFLAGS) -DKSW_CPU_DISPATCH $(INCLUDES) $< -o $@
@@ -98,7 +80,7 @@ ksw2_exts2_sse2.o:ksw2_exts2_sse.c ksw2.h kalloc.h
 		$(CC) -c $(CFLAGS) -msse2 -mno-sse4.1 $(CPPFLAGS) -DKSW_CPU_DISPATCH -DKSW_SSE2_ONLY $(INCLUDES) $< -o $@

 ksw2_dispatch.o:ksw2_dispatch.c ksw2.h
-		$(CC) -c $(CFLAGS) $(DISPATCH_FLAG) $(CPPFLAGS) -DKSW_CPU_DISPATCH $(INCLUDES) $< -o $@
+		$(CC) -c $(CFLAGS) -msse4.1 $(CPPFLAGS) -DKSW_CPU_DISPATCH $(INCLUDES) $< -o $@

 # NEON-specific targets on ARM

@@ -0,0 +1,97 @@
+CFLAGS=		-g -Wall -O2 -Wc++-compat #-Wextra
+CPPFLAGS=	-DHAVE_KALLOC -DUSE_SIMDE -DSIMDE_ENABLE_NATIVE_ALIASES
+INCLUDES=	-Ilib/simde
+OBJS=		kthread.o kalloc.o misc.o bseq.o sketch.o sdust.o options.o index.o chain.o align.o hit.o map.o format.o pe.o esterr.o splitidx.o \
+			ksw2_extz2_simde.o ksw2_extd2_simde.o ksw2_exts2_simde.o ksw2_ll_simde.o
+PROG=		minimap2
+PROG_EXTRA=	sdust minimap2-lite
+LIBS=		-lm -lz -lpthread
+
+
+ifneq ($(arm_neon),) # if arm_neon is defined
+ifeq ($(aarch64),)   #if aarch64 is not defined
+	CFLAGS+=-D_FILE_OFFSET_BITS=64 -mfpu=neon -fsigned-char
+else                 #if aarch64 is defined
+	CFLAGS+=-D_FILE_OFFSET_BITS=64 -fsigned-char
+endif
+endif
+
+ifneq ($(asan),)
+	CFLAGS+=-fsanitize=address
+	LIBS+=-fsanitize=address
+endif
+
+ifneq ($(tsan),)
+	CFLAGS+=-fsanitize=thread
+	LIBS+=-fsanitize=thread
+endif
+
+.PHONY:all extra clean depend
+.SUFFIXES:.c .o
+
+.c.o:
+		$(CC) -c $(CFLAGS) $(CPPFLAGS) $(INCLUDES) $< -o $@
+
+all:$(PROG)
+
+extra:all $(PROG_EXTRA)
+
+minimap2:main.o libminimap2.a
+		$(CC) $(CFLAGS) main.o -o $@ -L. -lminimap2 $(LIBS)
+
+minimap2-lite:example.o libminimap2.a
+		$(CC) $(CFLAGS) $< -o $@ -L. -lminimap2 $(LIBS)
+
+libminimap2.a:$(OBJS)
+		$(AR) -csru $@ $(OBJS)
+
+sdust:sdust.c kalloc.o kalloc.h kdq.h kvec.h kseq.h ketopt.h sdust.h
+		$(CC) -D_SDUST_MAIN $(CFLAGS) $< kalloc.o -o $@ -lz
+
+ksw2_ll_simde.o:ksw2_ll_sse.c ksw2.h kalloc.h
+		$(CC) -c $(CFLAGS) -msse2 $(CPPFLAGS) $(INCLUDES) $< -o $@
+
+ksw2_extz2_simde.o:ksw2_extz2_sse.c ksw2.h kalloc.h
+		$(CC) -c $(CFLAGS) -msse4.1 $(CPPFLAGS) $(INCLUDES) $< -o $@
+
+ksw2_extd2_simde.o:ksw2_extd2_sse.c ksw2.h kalloc.h
+		$(CC) -c $(CFLAGS) -msse4.1 $(CPPFLAGS) $(INCLUDES) $< -o $@
+
+ksw2_exts2_simde.o:ksw2_exts2_sse.c ksw2.h kalloc.h
+		$(CC) -c $(CFLAGS) -msse4.1 $(CPPFLAGS) $(INCLUDES) $< -o $@
+
+# other non-file targets
+
+clean:
+		rm -fr gmon.out *.o a.out $(PROG) $(PROG_EXTRA) *~ *.a *.dSYM build dist mappy*.so mappy.c python/mappy.c mappy.egg*
+
+depend:
+		(LC_ALL=C; export LC_ALL; makedepend -Y -- $(CFLAGS) $(CPPFLAGS) -- *.c)
+
+# DO NOT DELETE
+
+align.o: minimap.h mmpriv.h bseq.h kseq.h ksw2.h kalloc.h
+bseq.o: bseq.h kvec.h kalloc.h kseq.h
+chain.o: minimap.h mmpriv.h bseq.h kseq.h kalloc.h
+esterr.o: mmpriv.h minimap.h bseq.h kseq.h
+example.o: minimap.h kseq.h
+format.o: kalloc.h mmpriv.h minimap.h bseq.h kseq.h
+hit.o: mmpriv.h minimap.h bseq.h kseq.h kalloc.h khash.h
+index.o: kthread.h bseq.h minimap.h mmpriv.h kseq.h kvec.h kalloc.h khash.h
+index.o: ksort.h
+kalloc.o: kalloc.h
+ksw2_extd2_sse.o: ksw2.h kalloc.h
+ksw2_exts2_sse.o: ksw2.h kalloc.h
+ksw2_extz2_sse.o: ksw2.h kalloc.h
+ksw2_ll_sse.o: ksw2.h kalloc.h
+kthread.o: kthread.h
+main.o: bseq.h minimap.h mmpriv.h kseq.h ketopt.h
+map.o: kthread.h kvec.h kalloc.h sdust.h mmpriv.h minimap.h bseq.h kseq.h
+map.o: khash.h ksort.h
+misc.o: mmpriv.h minimap.h bseq.h kseq.h ksort.h
+options.o: mmpriv.h minimap.h bseq.h kseq.h
+pe.o: mmpriv.h minimap.h bseq.h kseq.h kvec.h kalloc.h ksort.h
+sdust.o: kalloc.h kdq.h kvec.h sdust.h
+self-chain.o: minimap.h kseq.h
+sketch.o: kvec.h kalloc.h mmpriv.h minimap.h bseq.h kseq.h
+splitidx.o: mmpriv.h minimap.h bseq.h kseq.h
@@ -1,3 +1,89 @@
+Release 2.18-r1015 (9 April 2021)
+---------------------------------
+
+This release fixes multiple rare bugs in minimap2 and adds additional
+functionality to paftools.js.
+
+Changes to minimap2:
+
+ * Bugfix: a rare segfault caused by an off-by-one error (#489)
+
+ * Bugfix: minimap2 segfaulted due to an uninitilized variable (#622 and #625).
+
+ * Bugfix: minimap2 parsed spaces as field separators in BED (#721). This led
+   to issues when the BED name column contains spaces.
+
+ * Bugfix: minimap2 `--split-prefix` did not work with long reference names
+   (#394).
+
+ * Bugfix: option `--junc-bonus` didn't work (#513)
+
+ * Bugfix: minimap2 didn't return 1 on I/O errors (#532)
+
+ * Bugfix: the `de:f` tag (sequence divergence) could be negative if there were
+   ambiguous bases
+
+ * Bugfix: fixed two undefined behaviors caused by calling memcpy() on
+   zero-length blocks (#443)
+
+ * Bugfix: there were duplicated SAM @SQ lines if option `--split-prefix` is in
+   use (#400 and #527)
+
+ * Bugfix: option -K had to be smaller than 2 billion (#491). This was caused
+   by a 32-bit integer overflow.
+
+ * Improvement: optionally compile against SIMDe (#597). Minimap2 should work
+   with IBM POWER CPUs, though this has not been tested. To compile with SIMDe,
+   please use `make -f Makefile.simde`.
+
+ * Improvement: more informative error message for I/O errors (#454) and for
+   FASTQ parsing errors (#510)
+
+ * Improvement: abort given malformatted RG line (#541)
+
+ * Improvement: better formula to estimate the `dv:f` tag (approximate sequence
+   divergence). See DOI:10.1101/2021.01.15.426881.
+
+ * New feature: added the `--mask-len` option to fine control the removal of
+   redundant hits (#659). The default behavior is unchanged.
+
+Changes to mappy:
+
+ * Bugfix: mappy caused segmentation fault if the reference index is not
+   present (#413).
+
+ * Bugfix: fixed a memory leak via 238b6bb3
+
+ * Change: always require Cython to compile the mappy module (#723). Older
+   mappy packages at PyPI bundled the C source code generated by Cython such
+   that end users did not need to install Cython to compile mappy. However, as
+   Python 3.9 is breaking backward compatibility, older mappy does not work
+   with Python 3.9 anymore. We have to add this Cython dependency as a
+   workaround.
+
+Changes to paftools.js:
+
+ * Bugfix: the "part10-" line from asmgene was wrong (#581)
+
+ * Improvement: compatibility with GTF files from GenBank (#422)
+
+ * New feature: asmgene also checks missing multi-copy genes
+
+ * New feature: added the misjoin command to evaluate large-scale misjoins and
+   megabase-long inversions.
+
+Although given the many bug fixes and minor improvements, the core algorithm
+stays the same. This version of minimap2 produces nearly identical alignments
+to v2.17 except very rare corner cases.
+
+Now unimap is recommended over minimap2 for aligning long contigs against a
+reference genome. It often takes less wall-clock time and is much more
+sensitive to long insertions and deletions.
+
+(2.18: 9 April 2021, r1015)
+
+
+
 Release 2.17-r941 (4 May 2019)
 ------------------------------

@@ -19,12 +19,17 @@ cd minimap2 && make
 ./minimap2 -ax splice ref.fa rna-reads.fa > aln.sam       # spliced long reads (strand unknown)
 ./minimap2 -ax splice -uf -k14 ref.fa reads.fa > aln.sam  # noisy Nanopore Direct RNA-seq
 ./minimap2 -ax splice:hq -uf ref.fa query.fa > aln.sam    # Final PacBio Iso-seq or traditional cDNA
+./minimap2 -ax splice --junc-bed anno.bed12 ref.fa query.fa > aln.sam  # prioritize on annotated junctions
 ./minimap2 -cx asm5 asm1.fa asm2.fa > aln.paf             # intra-species asm-to-asm alignment
 ./minimap2 -x ava-pb reads.fa reads.fa > overlaps.paf     # PacBio read overlap
 ./minimap2 -x ava-ont reads.fa reads.fa > overlaps.paf    # Nanopore read overlap
 # man page for detailed command line options
 man ./minimap2.1
 ```
+[Unimap][unimap] is recommended for aligning long contigs against a reference
+genome. It often takes less wall-clock time and is much more sensitive to long
+insertions and deletions.
+
 ## Table of Contents

 - [Getting Started](#started)
@@ -71,8 +76,8 @@ Detailed evaluations are available from the [minimap2 paper][doi] or the
 Minimap2 is optimized for x86-64 CPUs. You can acquire precompiled binaries from
 the [release page][release] with:
 ```sh
-curl -L https://github.com/lh3/minimap2/releases/download/v2.17/minimap2-2.17_x64-linux.tar.bz2 | tar -jxvf -
-./minimap2-2.17_x64-linux/minimap2
+curl -L https://github.com/lh3/minimap2/releases/download/v2.18/minimap2-2.18_x64-linux.tar.bz2 | tar -jxvf -
+./minimap2-2.18_x64-linux/minimap2
 ```
 If you want to compile from the source, you need to have a C compiler, GNU make
 and zlib development files installed. Then type `make` in the source code
@@ -80,7 +85,14 @@ directory to compile. If you see compilation errors, try `make sse2only=1`
 to disable SSE4 code, which will make minimap2 slightly slower.

 Minimap2 also works with ARM CPUs supporting the NEON instruction sets. To
-compile for 32 bit ARM architectures (such as ARMv7), use `make arm_neon=1`. To compile for for 64 bit ARM architectures (such as ARMv8), use `make arm_neon=1 aarch64=1`.
+compile for 32 bit ARM architectures (such as ARMv7), use `make arm_neon=1`. To
+compile for for 64 bit ARM architectures (such as ARMv8), use `make arm_neon=1
+aarch64=1`.
+
+Minimap2 can use [SIMD Everywhere (SIMDe)][simde] library for porting
+implementation to the different SIMD instruction sets. To compile using SIMDe,
+use `make -f Makefile.simde`. To compile for ARM CPUs, use `Makefile.simde`
+with the ARM related command lines given above.

 ### <a name="general"></a>General usage

@@ -178,6 +190,19 @@ This is because SIRV does not honor the evolutionarily conservative splicing
 signal. If you are studying SIRV, you may apply `--splice-flank=no` to let
 minimap2 only model GT..AG, ignoring the additional base.

+Since v2.17, minimap2 can optionally take annotated genes as input and
+prioritize on annotated splice junctions. To use this feature, you can 
+```sh
+paftools.js gff2bed anno.gff > anno.bed
+minimap2 -ax splice --junc-bed anno.bed ref.fa query.fa > aln.sam
+```
+Here, `anno.gff` is the gene annotation in the GTF or GFF3 format (`gff2bed`
+automatically tests the format). The output of `gff2bed` is in the 12-column
+BED format, or the BED12 format. With the `--junc-bed` option, minimap2 adds a
+bonus score (tuned by `--junc-bonus`) if an aligned junction matches a junction
+in the annotation. Option `--junc-bed` also takes 5-column BED, including the
+strand field. In this case, each line indicates an oriented junction.
+
 #### <a name="long-overlap"></a>Find overlaps between long reads

 ```sh
@@ -376,3 +401,5 @@ mappy` or [from BioConda][mappyconda] via `conda install -c bioconda mappy`.
 [manpage]: https://lh3.github.io/minimap2/minimap2.html
 [manpage-cs]: https://lh3.github.io/minimap2/minimap2.html#10
 [doi]: https://doi.org/10.1093/bioinformatics/bty191
+[smide]: https://github.com/nemequ/simde
+[unimap]: https://github.com/lh3/unimap
@@ -38,8 +38,8 @@ static inline void update_max_zdrop(int32_t score, int i, int j, int32_t *max, i
 		int z = *max - score - diff * e;
 		if (z > *max_zdrop) {
 			*max_zdrop = z;
-			pos[0][0] = *max_i, pos[0][1] = i + 1;
-			pos[1][0] = *max_j, pos[1][1] = j + 1;
+			pos[0][0] = *max_i, pos[0][1] = i;
+			pos[1][0] = *max_j, pos[1][1] = j;
 		}
 	} else *max = score, *max_i = i, *max_j = j;
 }
@@ -739,6 +739,13 @@ static void mm_align1(void *km, const mm_mapopt_t *opt, const mm_idx_t *mi, int
 			if (ez->n_cigar > 0)
 				mm_append_cigar(r, ez->n_cigar, ez->cigar);
 			if (ez->zdropped) { // truncated by Z-drop; TODO: sometimes Z-drop kicks in because the next seed placement is wrong. This can be fixed in principle.
+				if (!r->p) {
+					assert(ez->n_cigar == 0);
+					uint32_t capacity = sizeof(mm_extra_t)/4;
+					kroundup32(capacity);
+					r->p = (mm_extra_t*)calloc(capacity, 4);
+					r->p->capacity = capacity;
+				}
 				for (j = i - 1; j >= 0; --j)
 					if ((int32_t)a[as1 + j].x <= rs + ez->max_t)
 						break;
@@ -908,6 +915,6 @@ mm_reg1_t *mm_align_skeleton(void *km, const mm_mapopt_t *opt, const mm_idx_t *m
 	kfree(km, qseq0[0]);
 	kfree(km, ez.cigar);
 	mm_filter_regs(opt, qlen, n_regs_, regs);
-	mm_hit_sort(km, n_regs_, regs);
+	mm_hit_sort(km, n_regs_, regs, opt->alt_drop);
 	return regs;
 }
@@ -77,7 +77,7 @@ static inline void kseq2bseq(kseq_t *ks, mm_bseq1_t *s, int with_qual, int with_
 	s->l_seq = ks->seq.l;
 }

-mm_bseq1_t *mm_bseq_read3(mm_bseq_file_t *fp, int chunk_size, int with_qual, int with_comment, int frag_mode, int *n_)
+mm_bseq1_t *mm_bseq_read3(mm_bseq_file_t *fp, int64_t chunk_size, int with_qual, int with_comment, int frag_mode, int *n_)
 {
 	int64_t size = 0;
 	int ret;
@@ -99,7 +99,7 @@ mm_bseq1_t *mm_bseq_read3(mm_bseq_file_t *fp, int chunk_size, int with_qual, int
 		size += s->l_seq;
 		if (size >= chunk_size) {
 			if (frag_mode && a.a[a.n-1].l_seq < CHECK_PAIR_THRES) {
-				while (kseq_read(ks) >= 0) {
+				while ((ret = kseq_read(ks)) >= 0) {
 					kseq2bseq(ks, &fp->s, with_qual, with_comment);
 					if (mm_qname_same(fp->s.name, a.a[a.n-1].name)) {
 						kv_push(mm_bseq1_t, 0, a, fp->s);
@@ -110,23 +110,25 @@ mm_bseq1_t *mm_bseq_read3(mm_bseq_file_t *fp, int chunk_size, int with_qual, int
 			break;
 		}
 	}
-	if (ret < -1)
-		fprintf(stderr, "[WARNING]\033[1;31m wrong FASTA/FASTQ record. Continue anyway.\033[0m\n");
+	if (ret < -1) {
+		if (a.n) fprintf(stderr, "[WARNING]\033[1;31m failed to parse the FASTA/FASTQ record next to '%s'. Continue anyway.\033[0m\n", a.a[a.n-1].name);
+		else fprintf(stderr, "[WARNING]\033[1;31m failed to parse the first FASTA/FASTQ record. Continue anyway.\033[0m\n");
+	}
 	*n_ = a.n;
 	return a.a;
 }

-mm_bseq1_t *mm_bseq_read2(mm_bseq_file_t *fp, int chunk_size, int with_qual, int frag_mode, int *n_)
+mm_bseq1_t *mm_bseq_read2(mm_bseq_file_t *fp, int64_t chunk_size, int with_qual, int frag_mode, int *n_)
 {
 	return mm_bseq_read3(fp, chunk_size, with_qual, 0, frag_mode, n_);
 }

-mm_bseq1_t *mm_bseq_read(mm_bseq_file_t *fp, int chunk_size, int with_qual, int *n_)
+mm_bseq1_t *mm_bseq_read(mm_bseq_file_t *fp, int64_t chunk_size, int with_qual, int *n_)
 {
 	return mm_bseq_read2(fp, chunk_size, with_qual, 0, n_);
 }

-mm_bseq1_t *mm_bseq_read_frag2(int n_fp, mm_bseq_file_t **fp, int chunk_size, int with_qual, int with_comment, int *n_)
+mm_bseq1_t *mm_bseq_read_frag2(int n_fp, mm_bseq_file_t **fp, int64_t chunk_size, int with_qual, int with_comment, int *n_)
 {
 	int i;
 	int64_t size = 0;
@@ -156,7 +158,7 @@ mm_bseq1_t *mm_bseq_read_frag2(int n_fp, mm_bseq_file_t **fp, int chunk_size, in
 	return a.a;
 }

-mm_bseq1_t *mm_bseq_read_frag(int n_fp, mm_bseq_file_t **fp, int chunk_size, int with_qual, int *n_)
+mm_bseq1_t *mm_bseq_read_frag(int n_fp, mm_bseq_file_t **fp, int64_t chunk_size, int with_qual, int *n_)
 {
 	return mm_bseq_read_frag2(n_fp, fp, chunk_size, with_qual, 0, n_);
 }
@@ -18,11 +18,11 @@ typedef struct {

 mm_bseq_file_t *mm_bseq_open(const char *fn);
 void mm_bseq_close(mm_bseq_file_t *fp);
-mm_bseq1_t *mm_bseq_read3(mm_bseq_file_t *fp, int chunk_size, int with_qual, int with_comment, int frag_mode, int *n_);
-mm_bseq1_t *mm_bseq_read2(mm_bseq_file_t *fp, int chunk_size, int with_qual, int frag_mode, int *n_);
-mm_bseq1_t *mm_bseq_read(mm_bseq_file_t *fp, int chunk_size, int with_qual, int *n_);
-mm_bseq1_t *mm_bseq_read_frag2(int n_fp, mm_bseq_file_t **fp, int chunk_size, int with_qual, int with_comment, int *n_);
-mm_bseq1_t *mm_bseq_read_frag(int n_fp, mm_bseq_file_t **fp, int chunk_size, int with_qual, int *n_);
+mm_bseq1_t *mm_bseq_read3(mm_bseq_file_t *fp, int64_t chunk_size, int with_qual, int with_comment, int frag_mode, int *n_);
+mm_bseq1_t *mm_bseq_read2(mm_bseq_file_t *fp, int64_t chunk_size, int with_qual, int frag_mode, int *n_);
+mm_bseq1_t *mm_bseq_read(mm_bseq_file_t *fp, int64_t chunk_size, int with_qual, int *n_);
+mm_bseq1_t *mm_bseq_read_frag2(int n_fp, mm_bseq_file_t **fp, int64_t chunk_size, int with_qual, int with_comment, int *n_);
+mm_bseq1_t *mm_bseq_read_frag(int n_fp, mm_bseq_file_t **fp, int64_t chunk_size, int with_qual, int *n_);
 int mm_bseq_eof(mm_bseq_file_t *fp);

 extern unsigned char seq_nt4_table[256];
@@ -19,7 +19,7 @@ static inline int ilog2_32(uint32_t v)
 	return (t = v>>8) ? 8 + LogTable256[t] : LogTable256[v];
 }

-mm128_t *mm_chain_dp(int max_dist_x, int max_dist_y, int bw, int max_skip, int max_iter, int min_cnt, int min_sc, int is_cdna, int n_segs, int64_t n, mm128_t *a, int *n_u_, uint64_t **_u, void *km)
+mm128_t *mm_chain_dp(int max_dist_x, int max_dist_y, int bw, int max_skip, int max_iter, int min_cnt, int min_sc, float gap_scale, int is_cdna, int n_segs, int64_t n, mm128_t *a, int *n_u_, uint64_t **_u, void *km)
 { // TODO: make sure this works when n has more than 32 bits
 	int32_t k, *f, *p, *t, *v, n_u, n_v;
 	int64_t i, j, st = 0;
@@ -52,7 +52,7 @@ mm128_t *mm_chain_dp(int max_dist_x, int max_dist_y, int bw, int max_skip, int m
 		if (i - st > max_iter) st = i - max_iter;
 		for (j = i - 1; j >= st; --j) {
 			int64_t dr = ri - a[j].x;
-			int32_t dq = qi - (int32_t)a[j].y, dd, sc, log_dd;
+			int32_t dq = qi - (int32_t)a[j].y, dd, sc, log_dd, gap_cost;
 			int32_t sidj = (a[j].y & MM_SEED_SEG_MASK) >> MM_SEED_SEG_SHIFT;
 			if ((sidi == sidj && dr == 0) || dq <= 0) continue; // don't skip if an anchor is used by multiple segments; see below
 			if ((sidi == sidj && dq > max_dist_y) || dq > max_dist_x) continue;
@@ -62,14 +62,16 @@ mm128_t *mm_chain_dp(int max_dist_x, int max_dist_y, int bw, int max_skip, int m
 			min_d = dq < dr? dq : dr;
 			sc = min_d > q_span? q_span : dq < dr? dq : dr;
 			log_dd = dd? ilog2_32(dd) : 0;
+			gap_cost = 0;
 			if (is_cdna || sidi != sidj) {
 				int c_log, c_lin;
 				c_lin = (int)(dd * .01 * avg_qspan);
 				c_log = log_dd;
 				if (sidi != sidj && dr == 0) ++sc; // possibly due to overlapping paired ends; give a minor bonus
-				else if (dr > dq || sidi != sidj) sc -= c_lin < c_log? c_lin : c_log;
-				else sc -= c_lin + (c_log>>1);
-			} else sc -= (int)(dd * .01 * avg_qspan) + (log_dd>>1);
+				else if (dr > dq || sidi != sidj) gap_cost = c_lin < c_log? c_lin : c_log;
+				else gap_cost = c_lin + (c_log>>1);
+			} else gap_cost = (int)(dd * .01 * avg_qspan) + (log_dd>>1);
+			sc -= (int)((double)gap_cost * gap_scale + .499);
 			sc += f[j];
 			if (sc > max_f) {
 				max_f = sc, max_j = j;
@@ -31,8 +31,8 @@ To acquire the data used in this cookbook and to install minimap2 and paftools,
 please follow the command lines below:
 ```sh
 # install minimap2 executables
-curl -L https://github.com/lh3/minimap2/releases/download/v2.17/minimap2-2.17_x64-linux.tar.bz2 | tar jxf -
-cp minimap2-2.17_x64-linux/{minimap2,k8,paftools.js} .  # copy executables
+curl -L https://github.com/lh3/minimap2/releases/download/v2.18/minimap2-2.18_x64-linux.tar.bz2 | tar jxf -
+cp minimap2-2.18_x64-linux/{minimap2,k8,paftools.js} .  # copy executables
 export PATH="$PATH:"`pwd`                               # put the current directory on PATH
 # download example datasets
 curl -L https://github.com/lh3/minimap2/releases/download/v2.10/cookbook-data.tgz | tar zxf -
@@ -59,6 +59,6 @@ void mm_est_err(const mm_idx_t *mi, int qlen, int n_regs, mm_reg1_t *regs, const
 		n_tot = en - st + 1;
 		if (r->qs > avg_k && r->rs > avg_k) ++n_tot;
 		if (qlen - r->qs > avg_k && l_ref - r->re > avg_k) ++n_tot;
-		r->div = logf((float)n_tot / n_match) / avg_k;
+		r->div = n_match >= n_tot? 0.0f : (float)(1.0 - pow((double)n_match / n_tot, 1.0 / avg_k));
 	}
 }
@@ -274,7 +274,7 @@ double mm_event_identity(const mm_reg1_t *r)
 		if (op == 1 || op == 2)
 			++n_gapo, n_gap += len;
 	}
-	return (double)r->mlen / (r->blen - n_gap + n_gapo);
+	return (double)r->mlen / (r->blen + r->p->n_ambi - n_gap + n_gapo);
 }

 static inline void write_tags(kstring_t *s, const mm_reg1_t *r)
@@ -392,7 +392,7 @@ void mm_write_sam3(kstring_t *s, const mm_idx_t *mi, const mm_bseq1_t *t, int se
 {
 	const int max_bam_cigar_op = 65535;
 	int flag, n_regs = n_regss[seg_idx], cigar_in_tag = 0;
-	int this_rid = -1, this_pos = -1, this_rev = 0;
+	int this_rid = -1, this_pos = -1;
 	const mm_reg1_t *regs = regss[seg_idx], *r_prev = NULL, *r_next;
 	const mm_reg1_t *r = n_regs > 0 && reg_idx < n_regs && reg_idx >= 0? &regs[reg_idx] : NULL;

@@ -441,7 +441,7 @@ void mm_write_sam3(kstring_t *s, const mm_idx_t *mi, const mm_bseq1_t *t, int se
 			mm_sprintf_lite(s, "\t%s\t%d\t0\t*", mi->seq[this_rid].name, this_pos+1);
 		} else mm_sprintf_lite(s, "\t*\t0\t0\t*");
 	} else {
-		this_rid = r->rid, this_pos = r->rs, this_rev = r->rev;
+		this_rid = r->rid, this_pos = r->rs;
 		mm_sprintf_lite(s, "\t%s\t%d\t%d\t", mi->seq[r->rid].name, r->rs+1, r->mapq);
 		if ((opt_flag & MM_F_LONG_CIGAR) && r->p && r->p->n_cigar > max_bam_cigar_op - 2) {
 			int n_cigar = r->p->n_cigar;
@@ -87,6 +87,22 @@ mm_reg1_t *mm_gen_regs(void *km, uint32_t hash, int qlen, int n_u, uint64_t *u,
 	return r;
 }

+void mm_mark_alt(const mm_idx_t *mi, int n, mm_reg1_t *r)
+{
+	int i;
+	if (mi->n_alt == 0) return;
+	for (i = 0; i < n; ++i)
+		if (mi->seq[r[i].rid].is_alt)
+			r[i].is_alt = 1;
+}
+
+static inline int mm_alt_score(int score, float alt_diff_frac)
+{
+	if (score < 0) return score;
+	score = (int)(score * (1.0 - alt_diff_frac) + .499);
+	return score > 0? score : 1;
+}
+
 void mm_split_reg(mm_reg1_t *r, mm_reg1_t *r2, int n, int qlen, mm128_t *a)
 {
 	if (n <= 0 || n >= r->cnt) return;
@@ -106,7 +122,7 @@ void mm_split_reg(mm_reg1_t *r, mm_reg1_t *r2, int n, int qlen, mm128_t *a)
 	r->split |= 1, r2->split |= 2;
 }

-void mm_set_parent(void *km, float mask_level, int n, mm_reg1_t *r, int sub_diff, int hard_mask_level) // and compute mm_reg1_t::subsc
+void mm_set_parent(void *km, float mask_level, int mask_len, int n, mm_reg1_t *r, int sub_diff, int hard_mask_level, float alt_diff_frac) // and compute mm_reg1_t::subsc
 {
 	int i, j, k, *w;
 	uint64_t *cov;
@@ -146,13 +162,16 @@ skip_uncov:
 			min = ej - sj < ei - si? ej - sj : ei - si;
 			max = ej - sj > ei - si? ej - sj : ei - si;
 			ol = si < sj? (ei < sj? 0 : ei < ej? ei - sj : ej - sj) : (ej < si? 0 : ej < ei? ej - si : ei - si); // overlap length; TODO: this can be simplified
-			if ((float)ol / min - (float)uncov_len / max > mask_level) {
-				int cnt_sub = 0;
+			if ((float)ol / min - (float)uncov_len / max > mask_level && uncov_len <= mask_len) { // then this is a secondary hit
+				int cnt_sub = 0, sci = ri->score;
 				ri->parent = rp->parent;
-				rp->subsc = rp->subsc > ri->score? rp->subsc : ri->score;
+				if (!rp->is_alt && ri->is_alt) sci = mm_alt_score(sci, alt_diff_frac);
+				rp->subsc = rp->subsc > sci? rp->subsc : sci;
 				if (ri->cnt >= rp->cnt) cnt_sub = 1;
 				if (rp->p && ri->p && (rp->rid != ri->rid || rp->rs != ri->rs || rp->re != ri->re || ol != min)) { // the last condition excludes identical hits after DP
-					rp->p->dp_max2 = rp->p->dp_max2 > ri->p->dp_max? rp->p->dp_max2 : ri->p->dp_max;
+					sci = ri->p->dp_max;
+					if (!rp->is_alt && ri->is_alt) sci = mm_alt_score(sci, alt_diff_frac);
+					rp->p->dp_max2 = rp->p->dp_max2 > sci? rp->p->dp_max2 : sci;
 					if (rp->p->dp_max - ri->p->dp_max <= sub_diff) cnt_sub = 1;
 				}
 				if (cnt_sub) ++rp->n_sub;
@@ -166,7 +185,7 @@ set_parent_test:
 	kfree(km, w);
 }

-void mm_hit_sort(void *km, int *n_regs, mm_reg1_t *r)
+void mm_hit_sort(void *km, int *n_regs, mm_reg1_t *r, float alt_diff_frac)
 {
 	int32_t i, n_aux, n = *n_regs, has_cigar = 0, no_cigar = 0;
 	mm128_t *aux;
@@ -177,13 +196,11 @@ void mm_hit_sort(void *km, int *n_regs, mm_reg1_t *r)
 	t = (mm_reg1_t*)kmalloc(km, n * sizeof(mm_reg1_t));
 	for (i = n_aux = 0; i < n; ++i) {
 		if (r[i].inv || r[i].cnt > 0) { // squeeze out elements with cnt==0 (soft deleted)
-			if (r[i].p) {
-				aux[n_aux].x = (uint64_t)r[i].p->dp_max << 32 | r[i].hash;
-				has_cigar = 1;
-			} else {
-				aux[n_aux].x = (uint64_t)r[i].score << 32 | r[i].hash;
-				no_cigar = 1;
-			}
+			int score;
+			if (r[i].p) score = r[i].p->dp_max, has_cigar = 1;
+			else score = r[i].score, no_cigar = 1;
+			if (r[i].is_alt) score = mm_alt_score(score, alt_diff_frac);
+			aux[n_aux].x = (uint64_t)score << 32 | r[i].hash;
 			aux[n_aux++].y = i;
 		} else if (r[i].p) {
 			free(r[i].p);
@@ -316,6 +316,7 @@ static void *worker_pipeline(void *shared, int step, void *in)
 				} else seq->name = 0;
 				seq->len = s->seq[i].l_seq;
 				seq->offset = p->sum_len;
+				seq->is_alt = 0;
 				// copy the sequence
 				if (!(p->mi->flag & MM_I_NO_SEQ)) {
 					for (j = 0; j < seq->len; ++j) { // TODO: this is not the fastest way, but let's first see if speed matters here
@@ -414,6 +415,7 @@ mm_idx_t *mm_idx_str(int w, int k, int is_hpc, int bucket_bits, int n, const cha
 		}
 		p->offset = sum_len;
 		p->len = strlen(s);
+		p->is_alt = 0;
 		for (j = 0; j < p->len; ++j) {
 			int c = seq_nt4_table[(uint8_t)s[j]];
 			uint64_t o = sum_len + j;
@@ -500,6 +502,7 @@ mm_idx_t *mm_idx_load(FILE *fp)
 		}
 		fread(&s->len, 4, 1, fp);
 		s->offset = sum_len;
+		s->is_alt = 0;
 		sum_len += s->len;
 	}
 	for (i = 0; i < 1<<mi->b; ++i) {
@@ -607,6 +610,30 @@ int mm_idx_reader_eof(const mm_idx_reader_t *r) // TODO: in extremely rare cases
 #include "kseq.h"
 KSTREAM_DECLARE(gzFile, gzread)

+int mm_idx_alt_read(mm_idx_t *mi, const char *fn)
+{
+	int n_alt = 0;
+	gzFile fp;
+	kstream_t *ks;
+	kstring_t str = {0,0,0};
+	fp = fn && strcmp(fn, "-")? gzopen(fn, "r") : gzdopen(fileno(stdin), "r");
+	if (fp == 0) return -1;
+	ks = ks_init(fp);
+	if (mi->h == 0) mm_idx_index_name(mi);
+	while (ks_getuntil(ks, KS_SEP_LINE, &str, 0) >= 0) {
+		char *p;
+		int id;
+		for (p = str.s; *p && !isspace(*p); ++p) { }
+		*p = 0;
+		id = mm_idx_name2id(mi, str.s);
+		if (id >= 0) mi->seq[id].is_alt = 1, ++n_alt;
+	}
+	mi->n_alt = n_alt;
+	if (mm_verbose >= 3)
+		fprintf(stderr, "[M::%s] found %d ALT contigs\n", __func__, n_alt);
+	return n_alt;
+}
+
 #define sort_key_bed(a) ((a).st)
 KRADIX_SORT_INIT(bed, mm_idx_intv1_t, sort_key_bed, 4)

@@ -627,7 +654,7 @@ mm_idx_intv_t *mm_idx_read_bed(const mm_idx_t *mi, const char *fn, int read_junc
 		char *p, *q, *bl, *bs;
 		int32_t i, id = -1, n_blk = 0;
 		for (p = q = str.s, i = 0;; ++p) {
-			if (*p == 0 || isspace(*p)) {
+			if (*p == 0 || *p == '\t') {
 				int32_t c = *p;
 				*p = 0;
 				if (i == 0) { // chr
@@ -89,7 +89,7 @@
 #ifndef KSTRING_T
 #define KSTRING_T kstring_t
 typedef struct __kstring_t {
-	unsigned l, m;
+	size_t l, m;
 	char *s;
 } kstring_t;
 #endif
@@ -2,16 +2,15 @@
 #include <stdlib.h>
 #include "ksw2.h"

-#define SIMD_SSE      0x1
-#define SIMD_SSE2     0x2
-#define SIMD_SSE3     0x4
-#define SIMD_SSSE3    0x8
-#define SIMD_SSE4_1   0x10
-#define SIMD_SSE4_2   0x20
-#define SIMD_AVX      0x40
-#define SIMD_AVX2     0x80
-#define SIMD_AVX512F  0x100
-#define SIMD_AVX512BW 0x200
+#define SIMD_SSE     0x1
+#define SIMD_SSE2    0x2
+#define SIMD_SSE3    0x4
+#define SIMD_SSSE3   0x8
+#define SIMD_SSE4_1  0x10
+#define SIMD_SSE4_2  0x20
+#define SIMD_AVX     0x40
+#define SIMD_AVX2    0x80
+#define SIMD_AVX512F 0x100

 #ifndef _MSC_VER
 // adapted from https://github.com/01org/linux-sgx/blob/master/common/inc/internal/linux/cpuid_gnu.h
@@ -49,7 +48,6 @@ static int x86_simd(void)
 		__cpuidex(cpuid, 7, 0);
 		if (cpuid[1]>>5 &1) flag |= SIMD_AVX2;
 		if (cpuid[1]>>16&1) flag |= SIMD_AVX512F;
-		if (cpuid[1]>>30&1) flag |= SIMD_AVX512BW;
 	}
 	return flag;
 }
@@ -73,21 +71,7 @@ void ksw_extd2_sse(void *km, int qlen, const uint8_t *query, int tlen, const uin
 				   int8_t q, int8_t e, int8_t q2, int8_t e2, int w, int zdrop, int end_bonus, int flag, ksw_extz_t *ez);
 	extern void ksw_extd2_sse41(void *km, int qlen, const uint8_t *query, int tlen, const uint8_t *target, int8_t m, const int8_t *mat,
 				   int8_t q, int8_t e, int8_t q2, int8_t e2, int w, int zdrop, int end_bonus, int flag, ksw_extz_t *ez);
-	extern void ksw_extd2_avx2(void *km, int qlen, const uint8_t *query, int tlen, const uint8_t *target, int8_t m, const int8_t *mat,
-				   int8_t q, int8_t e, int8_t q2, int8_t e2, int w, int zdrop, int end_bonus, int flag, ksw_extz_t *ez);
-	extern void ksw_extd2_avx512(void *km, int qlen, const uint8_t *query, int tlen, const uint8_t *target, int8_t m, const int8_t *mat,
-				   int8_t q, int8_t e, int8_t q2, int8_t e2, int w, int zdrop, int end_bonus, int flag, ksw_extz_t *ez);
 	if (ksw_simd < 0) ksw_simd = x86_simd();
-#if defined(__AVX512BW__)
-	if (ksw_simd & SIMD_AVX512BW)
-		ksw_extd2_avx512(km, qlen, query, tlen, target, m, mat, q, e, q2, e2, w, zdrop, end_bonus, flag, ez);
-	else
-#endif
-#if defined(__AVX2__)
-	if (ksw_simd & SIMD_AVX2)
-		ksw_extd2_avx2(km, qlen, query, tlen, target, m, mat, q, e, q2, e2, w, zdrop, end_bonus, flag, ez);
-	else
-#endif
 	if (ksw_simd & SIMD_SSE4_1)
 		ksw_extd2_sse41(km, qlen, query, tlen, target, m, mat, q, e, q2, e2, w, zdrop, end_bonus, flag, ez);
 	else if (ksw_simd & SIMD_SSE2)
@@ -4,68 +4,29 @@
 #include "ksw2.h"

 #ifdef __SSE2__
-
-#if defined(__AVX512BW__)
-#include <immintrin.h>
-#define SIMD_INT __m512i
-#define SIMD_SHIFT 6
-#define simd_func(func) _mm512_##func
-#define simd_funcw(func) _mm512_##func##_si512
-
-#elif defined(__AVX2__)
-#include <immintrin.h>
-#define SIMD_INT __m256i
-#define SIMD_SHIFT 5
-#define simd_func(func) _mm256_##func
-#define simd_funcw(func) _mm256_##func##_si256
-
-#elif defined(__SSE2__)
+#ifdef USE_SIMDE
+#include <simde/x86/sse2.h>
+#else
 #include <emmintrin.h>
-#define SIMD_INT __m128i
-#define SIMD_SHIFT 4
-#define simd_func(func) _mm_##func
-#define simd_funcw(func) _mm_##func##_si128
+#endif

 #ifdef KSW_SSE2_ONLY
 #undef __SSE4_1__
 #endif

 #ifdef __SSE4_1__
+#ifdef USE_SIMDE
+#include <simde/x86/sse4.1.h>
+#else
 #include <smmintrin.h>
 #endif
-#endif // defined(__SSE2__)
-
-#define SIMD_WIDTH (1<<SIMD_SHIFT)
-
-
-#if !defined(__AVX512BW__)
-#if defined(__AVX2__)
-static inline __m256i simd_slli_1(__m256i x)
-{
-	return _mm256_insert_epi8(_mm256_slli_si256(x, 1), _mm256_extract_epi8(x, 15), 16);
-}
-static inline __m256i simd_srli_last(__m256i x)
-{
-	return _mm256_insert_epi8(_mm256_setzero_si256(), _mm256_extract_epi8(x, 31), 0);
-}
-#elif defined(__SSE2__)
-static inline __m128i simd_slli_1(__m128i x) { return _mm_slli_si128(x, 1); }
-static inline __m128i simd_srli_last(__m128i x) { return _mm_srli_si128(x, 15); }
 #endif
-#endif // ~__AVX512BW__
-

 #ifdef KSW_CPU_DISPATCH
-#if defined(__AVX512BW__)
-void ksw_extd2_avx512(void *km, int qlen, const uint8_t *query, int tlen, const uint8_t *target, int8_t m, const int8_t *mat,
-				   int8_t q, int8_t e, int8_t q2, int8_t e2, int w, int zdrop, int end_bonus, int flag, ksw_extz_t *ez)
-#elif defined(__AVX2__)
-void ksw_extd2_avx2(void *km, int qlen, const uint8_t *query, int tlen, const uint8_t *target, int8_t m, const int8_t *mat,
-				   int8_t q, int8_t e, int8_t q2, int8_t e2, int w, int zdrop, int end_bonus, int flag, ksw_extz_t *ez)
-#elif defined(__SSE4_1__)
+#ifdef __SSE4_1__
 void ksw_extd2_sse41(void *km, int qlen, const uint8_t *query, int tlen, const uint8_t *target, int8_t m, const int8_t *mat,
 				   int8_t q, int8_t e, int8_t q2, int8_t e2, int w, int zdrop, int end_bonus, int flag, ksw_extz_t *ez)
-#elif defined(__SSE2__)
+#else
 void ksw_extd2_sse2(void *km, int qlen, const uint8_t *query, int tlen, const uint8_t *target, int8_t m, const int8_t *mat,
 				   int8_t q, int8_t e, int8_t q2, int8_t e2, int w, int zdrop, int end_bonus, int flag, ksw_extz_t *ez)
 #endif
@@ -74,91 +35,64 @@ void ksw_extd2_sse(void *km, int qlen, const uint8_t *query, int tlen, const uin
 				   int8_t q, int8_t e, int8_t q2, int8_t e2, int w, int zdrop, int end_bonus, int flag, ksw_extz_t *ez)
 #endif // ~KSW_CPU_DISPATCH
 {
-#if defined(__AVX512BW__)
 #define __dp_code_block1 \
-	z = _mm512_load_si512(&s[t]); \
-	tmp = _mm512_loadu_si512((uint8_t*)&x[t] - 1); \
-	xt1 = _mm512_mask_blend_epi8(1, tmp, x1_); \
-	x1_ = _mm512_maskz_set1_epi8(1, *((uint8_t*)&x[t] + 63)); \
-	tmp = _mm512_loadu_si512((uint8_t*)&v[t] - 1); \
-	vt1 = _mm512_mask_blend_epi8(1, tmp, v1_); \
-	v1_ = _mm512_maskz_set1_epi8(1, *((uint8_t*)&v[t] + 63)); \
-	a = _mm512_add_epi8(xt1, vt1); \
-	ut = _mm512_load_si512(&u[t]); \
-	b = _mm512_add_epi8(_mm512_load_si512(&y[t]), ut); \
-	tmp = _mm512_loadu_si512((uint8_t*)&x2[t] - 1); \
-	x2t1 = _mm512_mask_blend_epi8(1, tmp, x21_); \
-	x21_ = _mm512_maskz_set1_epi8(1, *((uint8_t*)&x2[t] + 63)); \
-	a2= _mm512_add_epi8(x2t1, vt1); \
-	b2= _mm512_add_epi8(_mm512_load_si512(&y2[t]), ut);
-#else
-#define __dp_code_block1 \
-	z = simd_funcw(load)(&s[t]); \
-	xt1 = simd_funcw(load)(&x[t]);                        /* xt1 <- x[r-1][t..t+15] */ \
-	tmp = simd_srli_last(xt1);                            /* tmp <- x[r-1][t+15] */ \
-	xt1 = simd_funcw(or)(simd_slli_1(xt1), x1_);          /* xt1 <- x[r-1][t-1..t+14] */ \
+	z = _mm_load_si128(&s[t]); \
+	xt1 = _mm_load_si128(&x[t]);                     /* xt1 <- x[r-1][t..t+15] */ \
+	tmp = _mm_srli_si128(xt1, 15);                   /* tmp <- x[r-1][t+15] */ \
+	xt1 = _mm_or_si128(_mm_slli_si128(xt1, 1), x1_); /* xt1 <- x[r-1][t-1..t+14] */ \
 	x1_ = tmp; \
-	vt1 = simd_funcw(load)(&v[t]);                        /* vt1 <- v[r-1][t..t+15] */ \
-	tmp = simd_srli_last(vt1);                            /* tmp <- v[r-1][t+15] */ \
-	vt1 = simd_funcw(or)(simd_slli_1(vt1), v1_);          /* vt1 <- v[r-1][t-1..t+14] */ \
+	vt1 = _mm_load_si128(&v[t]);                     /* vt1 <- v[r-1][t..t+15] */ \
+	tmp = _mm_srli_si128(vt1, 15);                   /* tmp <- v[r-1][t+15] */ \
+	vt1 = _mm_or_si128(_mm_slli_si128(vt1, 1), v1_); /* vt1 <- v[r-1][t-1..t+14] */ \
 	v1_ = tmp; \
-	a = simd_func(add_epi8)(xt1, vt1);                    /* a <- x[r-1][t-1..t+14] + v[r-1][t-1..t+14] */ \
-	ut = simd_funcw(load)(&u[t]);                         /* ut <- u[t..t+15] */ \
-	b = simd_func(add_epi8)(simd_funcw(load)(&y[t]), ut); /* b <- y[r-1][t..t+15] + u[r-1][t..t+15] */ \
-	x2t1= simd_funcw(load)(&x2[t]); \
-	tmp = simd_srli_last(x2t1); \
-	x2t1= simd_funcw(or)(simd_slli_1(x2t1), x21_); \
+	a = _mm_add_epi8(xt1, vt1);                      /* a <- x[r-1][t-1..t+14] + v[r-1][t-1..t+14] */ \
+	ut = _mm_load_si128(&u[t]);                      /* ut <- u[t..t+15] */ \
+	b = _mm_add_epi8(_mm_load_si128(&y[t]), ut);     /* b <- y[r-1][t..t+15] + u[r-1][t..t+15] */ \
+	x2t1= _mm_load_si128(&x2[t]); \
+	tmp = _mm_srli_si128(x2t1, 15); \
+	x2t1= _mm_or_si128(_mm_slli_si128(x2t1, 1), x21_); \
 	x21_= tmp; \
-	a2= simd_func(add_epi8)(x2t1, vt1); \
-	b2= simd_func(add_epi8)(simd_funcw(load)(&y2[t]), ut);
-#endif // ~__AVX512BW__
+	a2= _mm_add_epi8(x2t1, vt1); \
+	b2= _mm_add_epi8(_mm_load_si128(&y2[t]), ut);

 #define __dp_code_block2 \
-	simd_funcw(store)(&u[t], simd_func(sub_epi8)(z, vt1));/* u[r][t..t+15] <- z - v[r-1][t-1..t+14] */ \
-	simd_funcw(store)(&v[t], simd_func(sub_epi8)(z, ut)); /* v[r][t..t+15] <- z - u[r-1][t..t+15] */ \
-	tmp = simd_func(sub_epi8)(z, q_); \
-	a = simd_func(sub_epi8)(a, tmp); \
-	b = simd_func(sub_epi8)(b, tmp); \
-	tmp = simd_func(sub_epi8)(z, q2_); \
-	a2= simd_func(sub_epi8)(a2, tmp); \
-	b2= simd_func(sub_epi8)(b2, tmp);
+	_mm_store_si128(&u[t], _mm_sub_epi8(z, vt1));    /* u[r][t..t+15] <- z - v[r-1][t-1..t+14] */ \
+	_mm_store_si128(&v[t], _mm_sub_epi8(z, ut));     /* v[r][t..t+15] <- z - u[r-1][t..t+15] */ \
+	tmp = _mm_sub_epi8(z, q_); \
+	a = _mm_sub_epi8(a, tmp); \
+	b = _mm_sub_epi8(b, tmp); \
+	tmp = _mm_sub_epi8(z, q2_); \
+	a2= _mm_sub_epi8(a2, tmp); \
+	b2= _mm_sub_epi8(b2, tmp);

 	int r, t, qe = q + e, n_col_, *off = 0, *off_end = 0, tlen_, qlen_, last_st, last_en, wl, wr, max_sc, min_sc, long_thres, long_diff;
 	int with_cigar = !(flag&KSW_EZ_SCORE_ONLY), approx_max = !!(flag&KSW_EZ_APPROX_MAX);
 	int32_t *H = 0, H0 = 0, last_H0_t = 0;
 	uint8_t *qr, *sf, *mem, *mem2 = 0;
-	SIMD_INT q_, q2_, qe_, qe2_, zero_, sc_mch_, sc_mis_, m1_, sc_N_, mask1_;
-	SIMD_INT *u, *v, *x, *y, *x2, *y2, *s, *p = 0;
+	__m128i q_, q2_, qe_, qe2_, zero_, sc_mch_, sc_mis_, m1_, sc_N_;
+	__m128i *u, *v, *x, *y, *x2, *y2, *s, *p = 0;

 	ksw_reset_extz(ez);
 	if (m <= 1 || qlen <= 0 || tlen <= 0) return;

 	if (q2 + e2 < q + e) t = q, q = q2, q2 = t, t = e, e = e2, e2 = t; // make sure q+e no larger than q2+e2

-	zero_   = simd_func(set1_epi8)(0);
-	q_      = simd_func(set1_epi8)(q);
-	q2_     = simd_func(set1_epi8)(q2);
-	qe_     = simd_func(set1_epi8)(q + e);
-	qe2_    = simd_func(set1_epi8)(q2 + e2);
-	sc_mch_ = simd_func(set1_epi8)(mat[0]);
-	sc_mis_ = simd_func(set1_epi8)(mat[1]);
-	sc_N_   = mat[m*m-1] == 0? simd_func(set1_epi8)(-e2) : simd_func(set1_epi8)(mat[m*m-1]);
-	m1_     = simd_func(set1_epi8)(m - 1); // wildcard
-
-#if defined(__AVX512BW__)
-	mask1_ = _mm512_maskz_set1_epi8(1, 0xff);
-#elif defined(__AVX2__)
-	mask1_ = _mm256_setr_epi32(0xff, 0, 0, 0, 0, 0, 0, 0);
-#elif defined(__SSE2__)
-	mask1_ = _mm_setr_epi32(0xff, 0, 0, 0);
-#endif
+	zero_   = _mm_set1_epi8(0);
+	q_      = _mm_set1_epi8(q);
+	q2_     = _mm_set1_epi8(q2);
+	qe_     = _mm_set1_epi8(q + e);
+	qe2_    = _mm_set1_epi8(q2 + e2);
+	sc_mch_ = _mm_set1_epi8(mat[0]);
+	sc_mis_ = _mm_set1_epi8(mat[1]);
+	sc_N_   = mat[m*m-1] == 0? _mm_set1_epi8(-e2) : _mm_set1_epi8(mat[m*m-1]);
+	m1_     = _mm_set1_epi8(m - 1); // wildcard

 	if (w < 0) w = tlen > qlen? tlen : qlen;
 	wl = wr = w;
-	tlen_ = (tlen + SIMD_WIDTH - 1) / SIMD_WIDTH;
+	tlen_ = (tlen + 15) / 16;
 	n_col_ = qlen < tlen? qlen : tlen;
-	n_col_ = ((n_col_ < w + 1? n_col_ : w + 1) + SIMD_WIDTH - 1) / SIMD_WIDTH + 1;
-	qlen_ = (qlen + SIMD_WIDTH - 1) / SIMD_WIDTH;
+	n_col_ = ((n_col_ < w + 1? n_col_ : w + 1) + 15) / 16 + 1;
+	qlen_ = (qlen + 15) / 16;
 	for (t = 1, max_sc = mat[0], min_sc = mat[1]; t < m * m; ++t) {
 		max_sc = max_sc > mat[t]? max_sc : mat[t];
 		min_sc = min_sc < mat[t]? min_sc : mat[t];
@@ -170,23 +104,23 @@ void ksw_extd2_sse(void *km, int qlen, const uint8_t *query, int tlen, const uin
 		++long_thres;
 	long_diff = long_thres * (e - e2) - (q2 - q) - e2;

-	mem = (uint8_t*)kcalloc(km, tlen_ * 8 + qlen_ + 1, SIMD_WIDTH);
-	u = (SIMD_INT*)(((size_t)mem + SIMD_WIDTH - 1) >> SIMD_SHIFT << SIMD_SHIFT); // 16-byte aligned
+	mem = (uint8_t*)kcalloc(km, tlen_ * 8 + qlen_ + 1, 16);
+	u = (__m128i*)(((size_t)mem + 15) >> 4 << 4); // 16-byte aligned
 	v = u + tlen_, x = v + tlen_, y = x + tlen_, x2 = y + tlen_, y2 = x2 + tlen_;
-	s = y2 + tlen_, sf = (uint8_t*)(s + tlen_), qr = sf + tlen_ * SIMD_WIDTH;
-	memset(u,  -q  - e,  tlen_ * SIMD_WIDTH);
-	memset(v,  -q  - e,  tlen_ * SIMD_WIDTH);
-	memset(x,  -q  - e,  tlen_ * SIMD_WIDTH);
-	memset(y,  -q  - e,  tlen_ * SIMD_WIDTH);
-	memset(x2, -q2 - e2, tlen_ * SIMD_WIDTH);
-	memset(y2, -q2 - e2, tlen_ * SIMD_WIDTH);
+	s = y2 + tlen_, sf = (uint8_t*)(s + tlen_), qr = sf + tlen_ * 16;
+	memset(u,  -q  - e,  tlen_ * 16);
+	memset(v,  -q  - e,  tlen_ * 16);
+	memset(x,  -q  - e,  tlen_ * 16);
+	memset(y,  -q  - e,  tlen_ * 16);
+	memset(x2, -q2 - e2, tlen_ * 16);
+	memset(y2, -q2 - e2, tlen_ * 16);
 	if (!approx_max) {
-		H = (int32_t*)kmalloc(km, tlen_ * SIMD_WIDTH * 4);
-		for (t = 0; t < tlen_ * SIMD_WIDTH; ++t) H[t] = KSW_NEG_INF;
+		H = (int32_t*)kmalloc(km, tlen_ * 16 * 4);
+		for (t = 0; t < tlen_ * 16; ++t) H[t] = KSW_NEG_INF;
 	}
 	if (with_cigar) {
-		mem2 = (uint8_t*)kmalloc(km, ((size_t)(qlen + tlen - 1) * n_col_ + 1) * SIMD_WIDTH);
-		p = (SIMD_INT*)(((size_t)mem2 + SIMD_WIDTH - 1) >> SIMD_SHIFT << SIMD_SHIFT);
+		mem2 = (uint8_t*)kmalloc(km, ((size_t)(qlen + tlen - 1) * n_col_ + 1) * 16);
+		p = (__m128i*)(((size_t)mem2 + 15) >> 4 << 4);
 		off = (int*)kmalloc(km, (qlen + tlen - 1) * sizeof(int) * 2);
 		off_end = off + qlen + tlen - 1;
 	}
@@ -199,7 +133,7 @@ void ksw_extd2_sse(void *km, int qlen, const uint8_t *query, int tlen, const uin
 		int8_t x1, x21, v1;
 		uint8_t *qrr = qr + (qlen - 1 - r);
 		int8_t *u8 = (int8_t*)u, *v8 = (int8_t*)v, *x8 = (int8_t*)x, *x28 = (int8_t*)x2;
-		SIMD_INT x1_, x21_, v1_;
+		__m128i x1_, x21_, v1_;
 		// find the boundaries
 		if (st < r - qlen + 1) st = r - qlen + 1;
 		if (en > r) en = r;
@@ -210,7 +144,7 @@ void ksw_extd2_sse(void *km, int qlen, const uint8_t *query, int tlen, const uin
 			break;
 		}
 		st0 = st, en0 = en;
-		st = st / SIMD_WIDTH * SIMD_WIDTH, en = (en + SIMD_WIDTH) / SIMD_WIDTH * SIMD_WIDTH - 1;
+		st = st / 16 * 16, en = (en + 16) / 16 * 16 - 1;
 		// set boundary conditions
 		if (st > 0) {
 			if (st - 1 >= last_st && st - 1 <= last_en) {
@@ -229,53 +163,47 @@ void ksw_extd2_sse(void *km, int qlen, const uint8_t *query, int tlen, const uin
 		}
 		// loop fission: set scores first
 		if (!(flag & KSW_EZ_GENERIC_SC)) {
-			for (t = st0; t <= en0; t += SIMD_WIDTH) {
-				SIMD_INT sq, st, tmp;
-				sq = simd_funcw(loadu)((SIMD_INT*)&sf[t]);
-				st = simd_funcw(loadu)((SIMD_INT*)&qrr[t]);
-#if defined(__AVX512BW__)
-				__mmask64 mask = _mm512_cmpeq_epi8_mask(sq, m1_) | _mm512_cmpeq_epi8_mask(st, m1_);
-				tmp = _mm512_mask_blend_epi8(_mm512_cmpeq_epi8_mask(sq, st), sc_mis_, sc_mch_);
-				tmp = _mm512_mask_blend_epi8(mask, tmp, sc_N_);
-#elif defined(__SSE4_1__) || defined(__AVX2__)
-				SIMD_INT mask = simd_funcw(or)(simd_func(cmpeq_epi8)(sq, m1_), simd_func(cmpeq_epi8)(st, m1_));
-				tmp = simd_func(cmpeq_epi8)(sq, st);
-				tmp = simd_func(blendv_epi8)(sc_mis_, sc_mch_, tmp);
-				tmp = simd_func(blendv_epi8)(tmp,     sc_N_,   mask);
-#elif defined(__SSE2__) // emulate blendv
-				SIMD_INT mask = simd_funcw(or)(simd_func(cmpeq_epi8)(sq, m1_), simd_func(cmpeq_epi8)(st, m1_));
-				tmp = simd_func(cmpeq_epi8)(sq, st);
+			for (t = st0; t <= en0; t += 16) {
+				__m128i sq, st, tmp, mask;
+				sq = _mm_loadu_si128((__m128i*)&sf[t]);
+				st = _mm_loadu_si128((__m128i*)&qrr[t]);
+				mask = _mm_or_si128(_mm_cmpeq_epi8(sq, m1_), _mm_cmpeq_epi8(st, m1_));
+				tmp = _mm_cmpeq_epi8(sq, st);
+#ifdef __SSE4_1__
+				tmp = _mm_blendv_epi8(sc_mis_, sc_mch_, tmp);
+				tmp = _mm_blendv_epi8(tmp,     sc_N_,   mask);
+#else
 				tmp = _mm_or_si128(_mm_andnot_si128(tmp,  sc_mis_), _mm_and_si128(tmp,  sc_mch_));
 				tmp = _mm_or_si128(_mm_andnot_si128(mask, tmp),     _mm_and_si128(mask, sc_N_));
 #endif
-				simd_funcw(storeu)((SIMD_INT*)((int8_t*)s + t), tmp);
+				_mm_storeu_si128((__m128i*)((int8_t*)s + t), tmp);
 			}
 		} else {
 			for (t = st0; t <= en0; ++t)
 				((uint8_t*)s)[t] = mat[sf[t] * m + qrr[t]];
 		}
 		// core loop
-		x1_  = simd_funcw(and)(simd_func(set1_epi8)((uint8_t)x1),  mask1_);
-		x21_ = simd_funcw(and)(simd_func(set1_epi8)((uint8_t)x21), mask1_);
-		v1_  = simd_funcw(and)(simd_func(set1_epi8)((uint8_t)v1),  mask1_);
-		st_ = st / SIMD_WIDTH, en_ = en / SIMD_WIDTH;
+		x1_  = _mm_cvtsi32_si128((uint8_t)x1);
+		x21_ = _mm_cvtsi32_si128((uint8_t)x21);
+		v1_  = _mm_cvtsi32_si128((uint8_t)v1);
+		st_ = st / 16, en_ = en / 16;
 		assert(en_ - st_ + 1 <= n_col_);
 		if (!with_cigar) { // score only
 			for (t = st_; t <= en_; ++t) {
-				SIMD_INT z, a, b, a2, b2, xt1, x2t1, vt1, ut, tmp;
+				__m128i z, a, b, a2, b2, xt1, x2t1, vt1, ut, tmp;
 				__dp_code_block1;
-#if defined(__SSE4_1__) || defined(__AVX2__) || defined(__AVX512BW__)
-				z = simd_func(max_epi8)(z, a);
-				z = simd_func(max_epi8)(z, b);
-				z = simd_func(max_epi8)(z, a2);
-				z = simd_func(max_epi8)(z, b2);
-				z = simd_func(min_epi8)(z, sc_mch_);
+#ifdef __SSE4_1__
+				z = _mm_max_epi8(z, a);
+				z = _mm_max_epi8(z, b);
+				z = _mm_max_epi8(z, a2);
+				z = _mm_max_epi8(z, b2);
+				z = _mm_min_epi8(z, sc_mch_);
 				__dp_code_block2; // save u[] and v[]; update a, b, a2 and b2
-				simd_funcw(store)(&x[t],  simd_func(sub_epi8)(simd_func(max_epi8)(a,  zero_), qe_));
-				simd_funcw(store)(&y[t],  simd_func(sub_epi8)(simd_func(max_epi8)(b,  zero_), qe_));
-				simd_funcw(store)(&x2[t], simd_func(sub_epi8)(simd_func(max_epi8)(a2, zero_), qe2_));
-				simd_funcw(store)(&y2[t], simd_func(sub_epi8)(simd_func(max_epi8)(b2, zero_), qe2_));
-#elif defined(__SSE2__)
+				_mm_store_si128(&x[t],  _mm_sub_epi8(_mm_max_epi8(a,  zero_), qe_));
+				_mm_store_si128(&y[t],  _mm_sub_epi8(_mm_max_epi8(b,  zero_), qe_));
+				_mm_store_si128(&x2[t], _mm_sub_epi8(_mm_max_epi8(a2, zero_), qe2_));
+				_mm_store_si128(&y2[t], _mm_sub_epi8(_mm_max_epi8(b2, zero_), qe2_));
+#else
 				tmp = _mm_cmpgt_epi8(a,  z);
 				z = _mm_or_si128(_mm_andnot_si128(tmp, z), _mm_and_si128(tmp, a));
 				tmp = _mm_cmpgt_epi8(b,  z);
@@ -298,42 +226,22 @@ void ksw_extd2_sse(void *km, int qlen, const uint8_t *query, int tlen, const uin
 #endif
 			}
 		} else if (!(flag&KSW_EZ_RIGHT)) { // gap left-alignment
-			SIMD_INT *pr = p + (size_t)r * n_col_ - st_;
+			__m128i *pr = p + (size_t)r * n_col_ - st_;
 			off[r] = st, off_end[r] = en;
 			for (t = st_; t <= en_; ++t) {
-				SIMD_INT d, z, a, b, a2, b2, xt1, x2t1, vt1, ut, tmp;
+				__m128i d, z, a, b, a2, b2, xt1, x2t1, vt1, ut, tmp;
 				__dp_code_block1;
-#if defined(__AVX512BW__)
-				d = _mm512_maskz_set1_epi8(_mm512_cmpgt_epi8_mask(a,  z), 1);
-				z = _mm512_max_epi8(z, a);
-				d = _mm512_mask_blend_epi8(_mm512_cmpgt_epi8_mask(b,  z), d, _mm512_set1_epi8(2));
-				z = _mm512_max_epi8(z, b);
-				d = _mm512_mask_blend_epi8(_mm512_cmpgt_epi8_mask(a2, z), d, _mm512_set1_epi8(3));
-				z = _mm512_max_epi8(z, a2);
-				d = _mm512_mask_blend_epi8(_mm512_cmpgt_epi8_mask(b2, z), d, _mm512_set1_epi8(4));
-				z = _mm512_max_epi8(z, b2);
-				z = _mm512_min_epi8(z, sc_mch_);
-				__dp_code_block2;
-				d = _mm512_or_si512(d, _mm512_maskz_set1_epi8(_mm512_cmpgt_epi8_mask(a,  zero_), 0x08)); // d = a  > 0? 1<<3 : 0
-				_mm512_store_si512(&x[t],  _mm512_sub_epi8(_mm512_max_epi8(a,  zero_), qe_));
-				d = _mm512_or_si512(d, _mm512_maskz_set1_epi8(_mm512_cmpgt_epi8_mask(b,  zero_), 0x10)); // d = b  > 0? 1<<4 : 0
-				_mm512_store_si512(&y[t],  _mm512_sub_epi8(_mm512_max_epi8(b,  zero_), qe_));
-				d = _mm512_or_si512(d, _mm512_maskz_set1_epi8(_mm512_cmpgt_epi8_mask(a2, zero_), 0x20)); // d = a2 > 0? 1<<5 : 0
-				_mm512_store_si512(&x2[t], _mm512_sub_epi8(_mm512_max_epi8(a2, zero_), qe2_));
-				d = _mm512_or_si512(d, _mm512_maskz_set1_epi8(_mm512_cmpgt_epi8_mask(b2, zero_), 0x40)); // d = b2 > 0? 1<<6 : 0
-				_mm512_store_si512(&y2[t], _mm512_sub_epi8(_mm512_max_epi8(b2, zero_), qe2_));
-#else
-#if defined(__SSE4_1__) || defined(__AVX2__)
-				d = simd_funcw(and)(simd_func(cmpgt_epi8)(a, z), simd_func(set1_epi8)(1));       // d = a  > z? 1 : 0
-				z = simd_func(max_epi8)(z, a);
-				d = simd_func(blendv_epi8)(d, simd_func(set1_epi8)(2), simd_func(cmpgt_epi8)(b,  z)); // d = b  > z? 2 : d
-				z = simd_func(max_epi8)(z, b);
-				d = simd_func(blendv_epi8)(d, simd_func(set1_epi8)(3), simd_func(cmpgt_epi8)(a2, z)); // d = a2 > z? 3 : d
-				z = simd_func(max_epi8)(z, a2);
-				d = simd_func(blendv_epi8)(d, simd_func(set1_epi8)(4), simd_func(cmpgt_epi8)(b2, z)); // d = a2 > z? 3 : d
-				z = simd_func(max_epi8)(z, b2);
-				z = simd_func(min_epi8)(z, sc_mch_);
-#elif defined(__SSE2__) // emulate SSE4.1 intrinsics _mm_max_epi8() and _mm_blendv_epi8()
+#ifdef __SSE4_1__
+				d = _mm_and_si128(_mm_cmpgt_epi8(a, z), _mm_set1_epi8(1));       // d = a  > z? 1 : 0
+				z = _mm_max_epi8(z, a);
+				d = _mm_blendv_epi8(d, _mm_set1_epi8(2), _mm_cmpgt_epi8(b,  z)); // d = b  > z? 2 : d
+				z = _mm_max_epi8(z, b);
+				d = _mm_blendv_epi8(d, _mm_set1_epi8(3), _mm_cmpgt_epi8(a2, z)); // d = a2 > z? 3 : d
+				z = _mm_max_epi8(z, a2);
+				d = _mm_blendv_epi8(d, _mm_set1_epi8(4), _mm_cmpgt_epi8(b2, z)); // d = a2 > z? 3 : d
+				z = _mm_max_epi8(z, b2);
+				z = _mm_min_epi8(z, sc_mch_);
+#else // we need to emulate SSE4.1 intrinsics _mm_max_epi8() and _mm_blendv_epi8()
 				tmp = _mm_cmpgt_epi8(a,  z);
 				d = _mm_and_si128(tmp, _mm_set1_epi8(1));
 				z = _mm_or_si128(_mm_andnot_si128(tmp, z), _mm_and_si128(tmp, a));
@@ -348,60 +256,39 @@ void ksw_extd2_sse(void *km, int qlen, const uint8_t *query, int tlen, const uin
 				z = _mm_or_si128(_mm_andnot_si128(tmp, z), _mm_and_si128(tmp, b2));
 				tmp = _mm_cmplt_epi8(sc_mch_, z);
 				z = _mm_or_si128(_mm_and_si128(tmp, sc_mch_), _mm_andnot_si128(tmp, z));
-#endif // ~__SSE2__
+#endif
 				__dp_code_block2;
-				tmp = simd_func(cmpgt_epi8)(a, zero_);
-				simd_funcw(store)(&x[t],  simd_func(sub_epi8)(simd_funcw(and)(tmp, a),  qe_));
-				d = simd_funcw(or)(d, simd_funcw(and)(tmp, simd_func(set1_epi8)(0x08))); // d = a > 0? 1<<3 : 0
-				tmp = simd_func(cmpgt_epi8)(b, zero_);
-				simd_funcw(store)(&y[t],  simd_func(sub_epi8)(simd_funcw(and)(tmp, b),  qe_));
-				d = simd_funcw(or)(d, simd_funcw(and)(tmp, simd_func(set1_epi8)(0x10))); // d = b > 0? 1<<4 : 0
-				tmp = simd_func(cmpgt_epi8)(a2, zero_);
-				simd_funcw(store)(&x2[t], simd_func(sub_epi8)(simd_funcw(and)(tmp, a2), qe2_));
-				d = simd_funcw(or)(d, simd_funcw(and)(tmp, simd_func(set1_epi8)(0x20))); // d = a > 0? 1<<5 : 0
-				tmp = simd_func(cmpgt_epi8)(b2, zero_);
-				simd_funcw(store)(&y2[t], simd_func(sub_epi8)(simd_funcw(and)(tmp, b2), qe2_));
-				d = simd_funcw(or)(d, simd_funcw(and)(tmp, simd_func(set1_epi8)(0x40))); // d = b > 0? 1<<6 : 0
-#endif // ~__AVX512BW__
-				simd_funcw(store)(&pr[t], d);
+				tmp = _mm_cmpgt_epi8(a, zero_);
+				_mm_store_si128(&x[t],  _mm_sub_epi8(_mm_and_si128(tmp, a),  qe_));
+				d = _mm_or_si128(d, _mm_and_si128(tmp, _mm_set1_epi8(0x08))); // d = a > 0? 1<<3 : 0
+				tmp = _mm_cmpgt_epi8(b, zero_);
+				_mm_store_si128(&y[t],  _mm_sub_epi8(_mm_and_si128(tmp, b),  qe_));
+				d = _mm_or_si128(d, _mm_and_si128(tmp, _mm_set1_epi8(0x10))); // d = b > 0? 1<<4 : 0
+				tmp = _mm_cmpgt_epi8(a2, zero_);
+				_mm_store_si128(&x2[t], _mm_sub_epi8(_mm_and_si128(tmp, a2), qe2_));
+				d = _mm_or_si128(d, _mm_and_si128(tmp, _mm_set1_epi8(0x20))); // d = a > 0? 1<<5 : 0
+				tmp = _mm_cmpgt_epi8(b2, zero_);
+				_mm_store_si128(&y2[t], _mm_sub_epi8(_mm_and_si128(tmp, b2), qe2_));
+				d = _mm_or_si128(d, _mm_and_si128(tmp, _mm_set1_epi8(0x40))); // d = b > 0? 1<<6 : 0
+				_mm_store_si128(&pr[t], d);
 			}
 		} else { // gap right-alignment
-			SIMD_INT *pr = p + (size_t)r * n_col_ - st_;
+			__m128i *pr = p + (size_t)r * n_col_ - st_;
 			off[r] = st, off_end[r] = en;
 			for (t = st_; t <= en_; ++t) {
-				SIMD_INT d, z, a, b, a2, b2, xt1, x2t1, vt1, ut, tmp;
+				__m128i d, z, a, b, a2, b2, xt1, x2t1, vt1, ut, tmp;
 				__dp_code_block1;
-#if defined(__AVX512BW__)
-				d = _mm512_maskz_set1_epi8(_mm512_cmpge_epi8_mask(a,  z), 1);
-				z = _mm512_max_epi8(z, a);
-				d = _mm512_mask_blend_epi8(_mm512_cmpge_epi8_mask(b,  z), d, _mm512_set1_epi8(2));
-				z = _mm512_max_epi8(z, b);
-				d = _mm512_mask_blend_epi8(_mm512_cmpge_epi8_mask(a2, z), d, _mm512_set1_epi8(3));
-				z = _mm512_max_epi8(z, a2);
-				d = _mm512_mask_blend_epi8(_mm512_cmpge_epi8_mask(b2, z), d, _mm512_set1_epi8(4));
-				z = _mm512_max_epi8(z, b2);
-				z = _mm512_min_epi8(z, sc_mch_);
-				__dp_code_block2;
-				d = _mm512_or_si512(d, _mm512_maskz_set1_epi8(_mm512_cmpge_epi8_mask(a,  zero_), 0x08)); // d = a  >= 0? 1<<3 : 0
-				_mm512_store_si512(&x[t],  _mm512_sub_epi8(_mm512_max_epi8(a,  zero_), qe_));
-				d = _mm512_or_si512(d, _mm512_maskz_set1_epi8(_mm512_cmpge_epi8_mask(b,  zero_), 0x10)); // d = b  >= 0? 1<<4 : 0
-				_mm512_store_si512(&y[t],  _mm512_sub_epi8(_mm512_max_epi8(b,  zero_), qe_));
-				d = _mm512_or_si512(d, _mm512_maskz_set1_epi8(_mm512_cmpge_epi8_mask(a2, zero_), 0x20)); // d = a2 >= 0? 1<<5 : 0
-				_mm512_store_si512(&x2[t], _mm512_sub_epi8(_mm512_max_epi8(a2, zero_), qe2_));
-				d = _mm512_or_si512(d, _mm512_maskz_set1_epi8(_mm512_cmpge_epi8_mask(b2, zero_), 0x40)); // d = b2 >= 0? 1<<6 : 0
-				_mm512_store_si512(&y2[t], _mm512_sub_epi8(_mm512_max_epi8(b2, zero_), qe2_));
-#else
-#if defined(__SSE4_1__) || defined(__AVX2__)
-				d = simd_funcw(andnot)(simd_func(cmpgt_epi8)(z, a), simd_func(set1_epi8)(1));    // d = z > a?  0 : 1
-				z = simd_func(max_epi8)(z, a);
-				d = simd_func(blendv_epi8)(simd_func(set1_epi8)(2), d, simd_func(cmpgt_epi8)(z, b));  // d = z > b?  d : 2
-				z = simd_func(max_epi8)(z, b);
-				d = simd_func(blendv_epi8)(simd_func(set1_epi8)(3), d, simd_func(cmpgt_epi8)(z, a2)); // d = z > a2? d : 3
-				z = simd_func(max_epi8)(z, a2);
-				d = simd_func(blendv_epi8)(simd_func(set1_epi8)(4), d, simd_func(cmpgt_epi8)(z, b2)); // d = z > b2? d : 4
-				z = simd_func(max_epi8)(z, b2);
-				z = simd_func(min_epi8)(z, sc_mch_);
-#elif defined(__SSE2__)
+#ifdef __SSE4_1__
+				d = _mm_andnot_si128(_mm_cmpgt_epi8(z, a), _mm_set1_epi8(1));    // d = z > a?  0 : 1
+				z = _mm_max_epi8(z, a);
+				d = _mm_blendv_epi8(_mm_set1_epi8(2), d, _mm_cmpgt_epi8(z, b));  // d = z > b?  d : 2
+				z = _mm_max_epi8(z, b);
+				d = _mm_blendv_epi8(_mm_set1_epi8(3), d, _mm_cmpgt_epi8(z, a2)); // d = z > a2? d : 3
+				z = _mm_max_epi8(z, a2);
+				d = _mm_blendv_epi8(_mm_set1_epi8(4), d, _mm_cmpgt_epi8(z, b2)); // d = z > b2? d : 4
+				z = _mm_max_epi8(z, b2);
+				z = _mm_min_epi8(z, sc_mch_);
+#else // we need to emulate SSE4.1 intrinsics _mm_max_epi8() and _mm_blendv_epi8()
 				tmp = _mm_cmpgt_epi8(z, a);
 				d = _mm_andnot_si128(tmp, _mm_set1_epi8(1));
 				z = _mm_or_si128(_mm_and_si128(tmp, z), _mm_andnot_si128(tmp, a));
@@ -416,64 +303,52 @@ void ksw_extd2_sse(void *km, int qlen, const uint8_t *query, int tlen, const uin
 				z = _mm_or_si128(_mm_and_si128(tmp, z), _mm_andnot_si128(tmp, b2));
 				tmp = _mm_cmplt_epi8(sc_mch_, z);
 				z = _mm_or_si128(_mm_and_si128(tmp, sc_mch_), _mm_andnot_si128(tmp, z));
-#endif // ~__SSE2__
+#endif
 				__dp_code_block2;
-				tmp = simd_func(cmpgt_epi8)(zero_, a);
-				simd_funcw(store)(&x[t],  simd_func(sub_epi8)(simd_funcw(andnot)(tmp, a),  qe_));
-				d = simd_funcw(or)(d, simd_funcw(andnot)(tmp, simd_func(set1_epi8)(0x08))); // d = a > 0? 1<<3 : 0
-				tmp = simd_func(cmpgt_epi8)(zero_, b);
-				simd_funcw(store)(&y[t],  simd_func(sub_epi8)(simd_funcw(andnot)(tmp, b),  qe_));
-				d = simd_funcw(or)(d, simd_funcw(andnot)(tmp, simd_func(set1_epi8)(0x10))); // d = b > 0? 1<<4 : 0
-				tmp = simd_func(cmpgt_epi8)(zero_, a2);
-				simd_funcw(store)(&x2[t], simd_func(sub_epi8)(simd_funcw(andnot)(tmp, a2), qe2_));
-				d = simd_funcw(or)(d, simd_funcw(andnot)(tmp, simd_func(set1_epi8)(0x20))); // d = a > 0? 1<<5 : 0
-				tmp = simd_func(cmpgt_epi8)(zero_, b2);
-				simd_funcw(store)(&y2[t], simd_func(sub_epi8)(simd_funcw(andnot)(tmp, b2), qe2_));
-				d = simd_funcw(or)(d, simd_funcw(andnot)(tmp, simd_func(set1_epi8)(0x40))); // d = b > 0? 1<<6 : 0
-#endif // ~__AVX512BW__
-				simd_funcw(store)(&pr[t], d);
+				tmp = _mm_cmpgt_epi8(zero_, a);
+				_mm_store_si128(&x[t],  _mm_sub_epi8(_mm_andnot_si128(tmp, a),  qe_));
+				d = _mm_or_si128(d, _mm_andnot_si128(tmp, _mm_set1_epi8(0x08))); // d = a > 0? 1<<3 : 0
+				tmp = _mm_cmpgt_epi8(zero_, b);
+				_mm_store_si128(&y[t],  _mm_sub_epi8(_mm_andnot_si128(tmp, b),  qe_));
+				d = _mm_or_si128(d, _mm_andnot_si128(tmp, _mm_set1_epi8(0x10))); // d = b > 0? 1<<4 : 0
+				tmp = _mm_cmpgt_epi8(zero_, a2);
+				_mm_store_si128(&x2[t], _mm_sub_epi8(_mm_andnot_si128(tmp, a2), qe2_));
+				d = _mm_or_si128(d, _mm_andnot_si128(tmp, _mm_set1_epi8(0x20))); // d = a > 0? 1<<5 : 0
+				tmp = _mm_cmpgt_epi8(zero_, b2);
+				_mm_store_si128(&y2[t], _mm_sub_epi8(_mm_andnot_si128(tmp, b2), qe2_));
+				d = _mm_or_si128(d, _mm_andnot_si128(tmp, _mm_set1_epi8(0x40))); // d = b > 0? 1<<6 : 0
+				_mm_store_si128(&pr[t], d);
 			}
 		}
 		if (!approx_max) { // find the exact max with a 32-bit score array
 			int32_t max_H, max_t;
 			// compute H[], max_H and max_t
 			if (r > 0) {
-				int32_t HH[SIMD_WIDTH/4], tt[SIMD_WIDTH/4], en1 = st0 + (en0 - st0) / (SIMD_WIDTH/4) * (SIMD_WIDTH/4), i;
-				SIMD_INT max_H_, max_t_;
+				int32_t HH[4], tt[4], en1 = st0 + (en0 - st0) / 4 * 4, i;
+				__m128i max_H_, max_t_;
 				max_H = H[en0] = en0 > 0? H[en0-1] + u8[en0] : H[en0] + v8[en0]; // special casing the last element
 				max_t = en0;
-				max_H_ = simd_func(set1_epi32)(max_H);
-				max_t_ = simd_func(set1_epi32)(max_t);
-				for (t = st0; t < en1; t += SIMD_WIDTH/4) { // this implements: H[t]+=v8[t]; if(H[t]>max_H) max_H=H[t],max_t=t;
-					SIMD_INT H1, t_;
-					H1 = simd_funcw(loadu)((SIMD_INT*)&H[t]);
-#if defined(__AVX512BW__)
-					t_ = _mm512_cvtepi8_epi32(_mm_loadu_si128((__m128i*)&v8[t]));
-#elif defined(__AVX2__)
-					t_ = _mm256_setr_epi32(v8[t], v8[t+1], v8[t+2], v8[t+3], v8[t+4], v8[t+5], v8[t+6], v8[t+7]);
-#elif defined(__SSE2__)
+				max_H_ = _mm_set1_epi32(max_H);
+				max_t_ = _mm_set1_epi32(max_t);
+				for (t = st0; t < en1; t += 4) { // this implements: H[t]+=v8[t]-qe; if(H[t]>max_H) max_H=H[t],max_t=t;
+					__m128i H1, tmp, t_;
+					H1 = _mm_loadu_si128((__m128i*)&H[t]);
 					t_ = _mm_setr_epi32(v8[t], v8[t+1], v8[t+2], v8[t+3]);
-#endif
-					H1 = simd_func(add_epi32)(H1, t_);
-					simd_funcw(storeu)((SIMD_INT*)&H[t], H1);
-					t_ = simd_func(set1_epi32)(t);
-#if defined(__AVX512BW__)
-					__mmask64 tmp = _mm512_cmpgt_epi32_mask(H1, max_H_);
-					max_H_ = _mm512_mask_blend_epi32(tmp, max_H_, H1);
-					max_t_ = _mm512_mask_blend_epi32(tmp, max_t_, t_);
-#elif defined(__SSE4_1__) || defined(__AVX2__)
-					SIMD_INT tmp = simd_func(cmpgt_epi32)(H1, max_H_);
-					max_H_ = simd_func(blendv_epi8)(max_H_, H1, tmp);
-					max_t_ = simd_func(blendv_epi8)(max_t_, t_, tmp);
-#elif defined(__SSE2__)
-					SIMD_INT tmp = simd_func(cmpgt_epi32)(H1, max_H_);
-					max_H_ = simd_funcw(or)(simd_funcw(and)(tmp, H1), simd_funcw(andnot)(tmp, max_H_));
-					max_t_ = simd_funcw(or)(simd_funcw(and)(tmp, t_), simd_funcw(andnot)(tmp, max_t_));
+					H1 = _mm_add_epi32(H1, t_);
+					_mm_storeu_si128((__m128i*)&H[t], H1);
+					t_ = _mm_set1_epi32(t);
+					tmp = _mm_cmpgt_epi32(H1, max_H_);
+#ifdef __SSE4_1__
+					max_H_ = _mm_blendv_epi8(max_H_, H1, tmp);
+					max_t_ = _mm_blendv_epi8(max_t_, t_, tmp);
+#else
+					max_H_ = _mm_or_si128(_mm_and_si128(tmp, H1), _mm_andnot_si128(tmp, max_H_));
+					max_t_ = _mm_or_si128(_mm_and_si128(tmp, t_), _mm_andnot_si128(tmp, max_t_));
 #endif
 				}
-				simd_funcw(storeu)((SIMD_INT*)HH, max_H_);
-				simd_funcw(storeu)((SIMD_INT*)tt, max_t_);
-				for (i = 0; i < SIMD_WIDTH/4; ++i)
+				_mm_storeu_si128((__m128i*)HH, max_H_);
+				_mm_storeu_si128((__m128i*)tt, max_t_);
+				for (i = 0; i < 4; ++i)
 					if (max_H < HH[i]) max_H = HH[i], max_t = tt[i] + i;
 				for (; t < en0; ++t) { // for the rest of values that haven't been computed with SSE
 					H[t] += (int32_t)v8[t];
@@ -514,12 +389,12 @@ void ksw_extd2_sse(void *km, int qlen, const uint8_t *query, int tlen, const uin
 	if (with_cigar) { // backtrack
 		int rev_cigar = !!(flag & KSW_EZ_REV_CIGAR);
 		if (!ez->zdropped && !(flag&KSW_EZ_EXTZ_ONLY)) {
-			ksw_backtrack(km, 1, rev_cigar, 0, (uint8_t*)p, off, off_end, n_col_*SIMD_WIDTH, tlen-1, qlen-1, &ez->m_cigar, &ez->n_cigar, &ez->cigar);
+			ksw_backtrack(km, 1, rev_cigar, 0, (uint8_t*)p, off, off_end, n_col_*16, tlen-1, qlen-1, &ez->m_cigar, &ez->n_cigar, &ez->cigar);
 		} else if (!ez->zdropped && (flag&KSW_EZ_EXTZ_ONLY) && ez->mqe + end_bonus > (int)ez->max) {
 			ez->reach_end = 1;
-			ksw_backtrack(km, 1, rev_cigar, 0, (uint8_t*)p, off, off_end, n_col_*SIMD_WIDTH, ez->mqe_t, qlen-1, &ez->m_cigar, &ez->n_cigar, &ez->cigar);
+			ksw_backtrack(km, 1, rev_cigar, 0, (uint8_t*)p, off, off_end, n_col_*16, ez->mqe_t, qlen-1, &ez->m_cigar, &ez->n_cigar, &ez->cigar);
 		} else if (ez->max_t >= 0 && ez->max_q >= 0) {
-			ksw_backtrack(km, 1, rev_cigar, 0, (uint8_t*)p, off, off_end, n_col_*SIMD_WIDTH, ez->max_t, ez->max_q, &ez->m_cigar, &ez->n_cigar, &ez->cigar);
+			ksw_backtrack(km, 1, rev_cigar, 0, (uint8_t*)p, off, off_end, n_col_*16, ez->max_t, ez->max_q, &ez->m_cigar, &ez->n_cigar, &ez->cigar);
 		}
 		kfree(km, mem2); kfree(km, off);
 	}
@@ -4,15 +4,22 @@
 #include "ksw2.h"

 #ifdef __SSE2__
+#ifdef USE_SIMDE
+#include <simde/x86/sse2.h>
+#else
 #include <emmintrin.h>
-
+#endif
 #ifdef KSW_SSE2_ONLY
 #undef __SSE4_1__
 #endif

 #ifdef __SSE4_1__
+#ifdef USE_SIMDE
+#include <simde/x86/sse4.1.h>
+#else
 #include <smmintrin.h>
 #endif
+#endif

 #ifdef KSW_CPU_DISPATCH
 #ifdef __SSE4_1__
@@ -3,15 +3,23 @@
 #include "ksw2.h"

 #ifdef __SSE2__
+#ifdef USE_SIMDE
+#include <simde/x86/sse2.h>
+#else
 #include <emmintrin.h>
+#endif

 #ifdef KSW_SSE2_ONLY
 #undef __SSE4_1__
 #endif

 #ifdef __SSE4_1__
+#ifdef USE_SIMDE
+#include <simde/x86/sse4.1.h>
+#else
 #include <smmintrin.h>
 #endif
+#endif

 #ifdef KSW_CPU_DISPATCH
 #ifdef __SSE4_1__
@@ -1,9 +1,14 @@
 #include <stdlib.h>
 #include <stdint.h>
 #include <string.h>
-#include <emmintrin.h>
 #include "ksw2.h"

+#ifdef USE_SIMDE
+#include <simde/x86/sse2.h>
+#else
+#include <emmintrin.h>
+#endif
+
 #ifdef __GNUC__
 #define LIKELY(x) __builtin_expect((x),1)
 #define UNLIKELY(x) __builtin_expect((x),0)
@@ -7,7 +7,7 @@
 #include "mmpriv.h"
 #include "ketopt.h"

-#define MM_VERSION "2.17-r963-dirty"
+#define MM_VERSION "2.18-r1015"

 #ifdef __linux__
 #include <sys/resource.h>
@@ -67,6 +67,10 @@ static ko_longopt_t long_options[] = {
 	{ "junc-bed",       ko_required_argument, 340 },
 	{ "junc-bonus",     ko_required_argument, 341 },
 	{ "sam-hit-only",   ko_no_argument,       342 },
+	{ "chain-gap-scale",ko_required_argument, 343 },
+	{ "alt",            ko_required_argument, 344 },
+	{ "alt-drop",       ko_required_argument, 345 },
+	{ "mask-len",       ko_required_argument, 346 },
 	{ "help",           ko_no_argument,       'h' },
 	{ "max-intron-len", ko_required_argument, 'G' },
 	{ "version",        ko_no_argument,       'V' },
@@ -109,7 +113,7 @@ int main(int argc, char *argv[])
 	mm_mapopt_t opt;
 	mm_idxopt_t ipt;
 	int i, c, n_threads = 3, n_parts, old_best_n = -1;
-	char *fnw = 0, *rg = 0, *junc_bed = 0, *s;
+	char *fnw = 0, *rg = 0, *junc_bed = 0, *s, *alt_list = 0;
 	FILE *fp_help = stderr;
 	mm_idx_reader_t *idx_rdr;
 	mm_idx_t *mi;
@@ -166,7 +170,7 @@ int main(int argc, char *argv[])
 		else if (c == 's') opt.min_dp_max = atoi(o.arg);
 		else if (c == 'C') opt.noncan = atoi(o.arg);
 		else if (c == 'I') ipt.batch_size = mm_parse_num(o.arg);
-		else if (c == 'K') opt.mini_batch_size = (int)mm_parse_num(o.arg);
+		else if (c == 'K') opt.mini_batch_size = mm_parse_num(o.arg);
 		else if (c == 'R') rg = o.arg;
 		else if (c == 'h') fp_help = stdout;
 		else if (c == '2') opt.flag |= MM_F_2_IO_THREADS;
@@ -211,6 +215,10 @@ int main(int argc, char *argv[])
 		else if (c == 340) junc_bed = o.arg; // --junc-bed
 		else if (c == 341) opt.junc_bonus = atoi(o.arg); // --junc-bonus
 		else if (c == 342) opt.flag |= MM_F_SAM_HIT_ONLY; // --sam-hit-only
+		else if (c == 343) opt.chain_gap_scale = atof(o.arg); // --chain-gap-scale
+		else if (c == 344) alt_list = o.arg; // --alt
+		else if (c == 345) opt.alt_drop = atof(o.arg); // --alt-drop
+		else if (c == 346) opt.mask_len = mm_parse_num(o.arg); // --mask-len
 		else if (c == 314) { // --frag
 			yes_or_no(&opt, MM_F_FRAG_MODE, o.longidx, o.arg, 1);
 		} else if (c == 315) { // --secondary
@@ -350,6 +358,7 @@ int main(int argc, char *argv[])
 	if (opt.best_n == 0 && (opt.flag&MM_F_CIGAR) && mm_verbose >= 2)
 		fprintf(stderr, "[WARNING]\033[1;31m `-N 0' reduces alignment accuracy. Please use --secondary=no to suppress secondary alignments.\033[0m\n");
 	while ((mi = mm_idx_reader_read(idx_rdr, n_threads)) != 0) {
+		int ret;
 		if ((opt.flag & MM_F_CIGAR) && (mi->flag & MM_I_NO_SEQ)) {
 			fprintf(stderr, "[ERROR] the prebuilt index doesn't contain sequences.\n");
 			mm_idx_destroy(mi);
@@ -357,9 +366,11 @@ int main(int argc, char *argv[])
 			return 1;
 		}
 		if ((opt.flag & MM_F_OUT_SAM) && idx_rdr->n_parts == 1) {
-			int ret;
 			if (mm_idx_reader_eof(idx_rdr)) {
-				ret = mm_write_sam_hdr(mi, rg, MM_VERSION, argc, argv);
+				if (opt.split_prefix == 0)
+					ret = mm_write_sam_hdr(mi, rg, MM_VERSION, argc, argv);
+				else
+					ret = mm_write_sam_hdr(0, rg, MM_VERSION, argc, argv);
 			} else {
 				ret = mm_write_sam_hdr(0, rg, MM_VERSION, argc, argv);
 				if (opt.split_prefix == 0 && mm_verbose >= 2)
@@ -377,13 +388,21 @@ int main(int argc, char *argv[])
 		if (argc != o.ind + 1) mm_mapopt_update(&opt, mi);
 		if (mm_verbose >= 3) mm_idx_stat(mi);
 		if (junc_bed) mm_idx_bed_read(mi, junc_bed, 1);
+		if (alt_list) mm_idx_alt_read(mi, alt_list);
+		ret = 0;
 		if (!(opt.flag & MM_F_FRAG_MODE)) {
-			for (i = o.ind + 1; i < argc; ++i)
-				mm_map_file(mi, argv[i], &opt, n_threads);
+			for (i = o.ind + 1; i < argc; ++i) {
+				ret = mm_map_file(mi, argv[i], &opt, n_threads);
+				if (ret < 0) break;
+			}
 		} else {
-			mm_map_file_frag(mi, argc - (o.ind + 1), (const char**)&argv[o.ind + 1], &opt, n_threads);
+			ret = mm_map_file_frag(mi, argc - (o.ind + 1), (const char**)&argv[o.ind + 1], &opt, n_threads);
 		}
 		mm_idx_destroy(mi);
+		if (ret < 0) {
+			fprintf(stderr, "ERROR: failed to map the query file\n");
+			exit(EXIT_FAILURE);
+		}
 	}
 	n_parts = idx_rdr->n_parts;
 	mm_idx_reader_close(idx_rdr);
@@ -249,7 +249,7 @@ static mm128_t *collect_seed_hits(void *km, const mm_mapopt_t *opt, int max_occ,
 static void chain_post(const mm_mapopt_t *opt, int max_chain_gap_ref, const mm_idx_t *mi, void *km, int qlen, int n_segs, const int *qlens, int *n_regs, mm_reg1_t *regs, mm128_t *a)
 {
 	if (!(opt->flag & MM_F_ALL_CHAINS)) { // don't choose primary mapping(s)
-		mm_set_parent(km, opt->mask_level, *n_regs, regs, opt->a * 2 + opt->b, opt->flag&MM_F_HARD_MLEVEL);
+		mm_set_parent(km, opt->mask_level, opt->mask_len, *n_regs, regs, opt->a * 2 + opt->b, opt->flag&MM_F_HARD_MLEVEL, opt->alt_drop);
 		if (n_segs <= 1) mm_select_sub(km, opt->pri_ratio, mi->k*2, opt->best_n, n_regs, regs);
 		else mm_select_sub_multi(km, opt->pri_ratio, 0.2f, 0.7f, max_chain_gap_ref, mi->k*2, opt->best_n, n_segs, qlens, n_regs, regs);
 		if (!(opt->flag & (MM_F_SPLICE|MM_F_SR|MM_F_NO_LJOIN))) // long join not working well without primary chains
@@ -262,7 +262,7 @@ static mm_reg1_t *align_regs(const mm_mapopt_t *opt, const mm_idx_t *mi, void *k
 	if (!(opt->flag & MM_F_CIGAR)) return regs;
 	regs = mm_align_skeleton(km, opt, mi, qlen, seq, n_regs, regs, a); // this calls mm_filter_regs()
 	if (!(opt->flag & MM_F_ALL_CHAINS)) { // don't choose primary mapping(s)
-		mm_set_parent(km, opt->mask_level, *n_regs, regs, opt->a * 2 + opt->b, opt->flag&MM_F_HARD_MLEVEL);
+		mm_set_parent(km, opt->mask_level, opt->mask_len, *n_regs, regs, opt->a * 2 + opt->b, opt->flag&MM_F_HARD_MLEVEL, opt->alt_drop);
 		mm_select_sub(km, opt->pri_ratio, mi->k*2, opt->best_n, n_regs, regs);
 		mm_set_sam_pri(*n_regs, regs);
 	}
@@ -313,7 +313,7 @@ void mm_map_frag(const mm_idx_t *mi, int n_segs, const int *qlens, const char **
 		if (max_chain_gap_ref < opt->max_gap) max_chain_gap_ref = opt->max_gap;
 	} else max_chain_gap_ref = opt->max_gap;

-	a = mm_chain_dp(max_chain_gap_ref, max_chain_gap_qry, opt->bw, opt->max_chain_skip, opt->max_chain_iter, opt->min_cnt, opt->min_chain_score, is_splice, n_segs, n_a, a, &n_regs0, &u, b->km);
+	a = mm_chain_dp(max_chain_gap_ref, max_chain_gap_qry, opt->bw, opt->max_chain_skip, opt->max_chain_iter, opt->min_cnt, opt->min_chain_score, opt->chain_gap_scale, is_splice, n_segs, n_a, a, &n_regs0, &u, b->km);

 	if (opt->max_occ > opt->mid_occ && rep_len > 0) {
 		int rechain = 0;
@@ -335,13 +335,17 @@ void mm_map_frag(const mm_idx_t *mi, int n_segs, const int *qlens, const char **
 			kfree(b->km, mini_pos);
 			if (opt->flag & MM_F_HEAP_SORT) a = collect_seed_hits_heap(b->km, opt, opt->max_occ, mi, qname, &mv, qlen_sum, &n_a, &rep_len, &n_mini_pos, &mini_pos);
 			else a = collect_seed_hits(b->km, opt, opt->max_occ, mi, qname, &mv, qlen_sum, &n_a, &rep_len, &n_mini_pos, &mini_pos);
-			a = mm_chain_dp(max_chain_gap_ref, max_chain_gap_qry, opt->bw, opt->max_chain_skip, opt->max_chain_iter, opt->min_cnt, opt->min_chain_score, is_splice, n_segs, n_a, a, &n_regs0, &u, b->km);
+			a = mm_chain_dp(max_chain_gap_ref, max_chain_gap_qry, opt->bw, opt->max_chain_skip, opt->max_chain_iter, opt->min_cnt, opt->min_chain_score, opt->chain_gap_scale, is_splice, n_segs, n_a, a, &n_regs0, &u, b->km);
 		}
 	}
 	b->frag_gap = max_chain_gap_ref;
 	b->rep_len = rep_len;

 	regs0 = mm_gen_regs(b->km, hash, qlen_sum, n_regs0, u, a);
+	if (mi->n_alt) {
+		mm_mark_alt(mi, n_regs0, regs0);
+		mm_hit_sort(b->km, &n_regs0, regs0, opt->alt_drop); // this step can be merged into mm_gen_regs(); will do if this shows up in profile
+	}

 	if (mm_dbg_flag & MM_DBG_PRINT_SEED)
 		for (j = 0; j < n_regs0; ++j)
@@ -361,7 +365,7 @@ void mm_map_frag(const mm_idx_t *mi, int n_segs, const int *qlens, const char **
 		seg = mm_seg_gen(b->km, hash, n_segs, qlens, n_regs0, regs0, n_regs, regs, a); // split fragment chain to separate segment chains
 		free(regs0);
 		for (i = 0; i < n_segs; ++i) {
-			mm_set_parent(b->km, opt->mask_level, n_regs[i], regs[i], opt->a * 2 + opt->b, opt->flag&MM_F_HARD_MLEVEL); // update mm_reg1_t::parent
+			mm_set_parent(b->km, opt->mask_level, opt->mask_len, n_regs[i], regs[i], opt->a * 2 + opt->b, opt->flag&MM_F_HARD_MLEVEL, opt->alt_drop); // update mm_reg1_t::parent
 			regs[i] = align_regs(opt, mi, b->km, qlens[i], seqs[i], &n_regs[i], regs[i], seg[i].a);
 			mm_set_mapq(b->km, n_regs[i], regs[i], opt->min_chain_score, opt->a, rep_len, is_sr);
 		}
@@ -399,7 +403,8 @@ mm_reg1_t *mm_map(const mm_idx_t *mi, int qlen, const char *seq, int *n_regs, mm
 **************************/

 typedef struct {
-	int mini_batch_size, n_processed, n_threads, n_fp;
+	int n_processed, n_threads, n_fp;
+	int64_t mini_batch_size;
 	const mm_mapopt_t *opt;
 	mm_bseq_file_t **fp;
 	const mm_idx_t *mi;
@@ -503,8 +508,8 @@ static void merge_hits(step_t *s)
 					}
 				}
 			}
-			mm_hit_sort(km, &s->n_reg[k], s->reg[k]);
-			mm_set_parent(km, opt->mask_level, s->n_reg[k], s->reg[k], opt->a * 2 + opt->b, opt->flag&MM_F_HARD_MLEVEL);
+			mm_hit_sort(km, &s->n_reg[k], s->reg[k], opt->alt_drop);
+			mm_set_parent(km, opt->mask_level, opt->mask_len, s->n_reg[k], s->reg[k], opt->a * 2 + opt->b, opt->flag&MM_F_HARD_MLEVEL, opt->alt_drop);
 			if (!(opt->flag & MM_F_ALL_CHAINS)) {
 				mm_select_sub(km, opt->pri_ratio, s->p->mi->k*2, opt->best_n, &s->n_reg[k], s->reg[k]);
 				mm_set_sam_pri(s->n_reg[k], s->reg[k]);
@@ -58,12 +58,14 @@ typedef struct {
 	char *name;      // name of the db sequence
 	uint64_t offset; // offset in mm_idx_t::S
 	uint32_t len;    // length
+	uint32_t is_alt;
 } mm_idx_seq_t;

 typedef struct {
 	int32_t b, w, k, flag;
 	uint32_t n_seq;            // number of reference sequences
 	int32_t index;
+	int32_t n_alt;
 	mm_idx_seq_t *seq;         // sequence name, length and offset
 	uint32_t *S;               // 4-bit packed sequence
 	struct mm_idx_bucket_s *B; // index (hidden)
@@ -91,7 +93,7 @@ typedef struct {
 	int32_t mlen, blen;     // seeded exact match length; seeded alignment block length
 	int32_t n_sub;          // number of suboptimal mappings
 	int32_t score0;         // initial chaining score (before chain merging/spliting)
-	uint32_t mapq:8, split:2, rev:1, inv:1, sam_pri:1, proper_frag:1, pe_thru:1, seg_split:1, seg_id:8, split_inv:1, dummy:7;
+	uint32_t mapq:8, split:2, rev:1, inv:1, sam_pri:1, proper_frag:1, pe_thru:1, seg_split:1, seg_id:8, split_inv:1, is_alt:1, dummy:6;
 	uint32_t hash;
 	float div;
 	mm_extra_t *p;
@@ -100,7 +102,7 @@ typedef struct {
 // indexing and mapping options
 typedef struct {
 	short k, w, flag, bucket_bits;
-	int mini_batch_size;
+	int64_t mini_batch_size;
 	uint64_t batch_size;
 } mm_idxopt_t;

@@ -117,8 +119,10 @@ typedef struct {
 	int max_chain_skip, max_chain_iter;
 	int min_cnt;         // min number of minimizers on each chain
 	int min_chain_score; // min chaining score
+	float chain_gap_scale;

 	float mask_level;
+	int mask_len;
 	float pri_ratio;
 	int best_n;      // top best_n chains are subjected to DP alignment

@@ -126,6 +130,8 @@ typedef struct {
 	int min_join_flank_sc;
 	float min_join_flank_ratio;

+	float alt_drop;
+
 	int a, b, q, e, q2, e2; // matching score, mismatch, gap-open and gap-ext penalties
 	int sc_ambi; // score when one or both bases are "N"
 	int noncan;      // cost of non-canonical splicing sites
@@ -143,7 +149,7 @@ typedef struct {
 	int32_t min_mid_occ;
 	int32_t mid_occ;     // ignore seeds with occurrences above this threshold
 	int32_t max_occ;
-	int mini_batch_size; // size of a batch of query bases to process in parallel
+	int64_t mini_batch_size; // size of a batch of query bases to process in parallel
 	int64_t max_sw_mat;

 	const char *split_prefix;
@@ -368,6 +374,7 @@ int mm_idx_index_name(mm_idx_t *mi);
 int mm_idx_name2id(const mm_idx_t *mi, const char *name);
 int mm_idx_getseq(const mm_idx_t *mi, uint32_t rid, uint32_t st, uint32_t en, uint8_t *seq);

+int mm_idx_alt_read(mm_idx_t *mi, const char *fn);
 int mm_idx_bed_read(mm_idx_t *mi, const char *fn, int read_junc);
 int mm_idx_bed_junc(const mm_idx_t *mi, int32_t ctg, int32_t st, int32_t en, uint8_t *s);

@@ -1,4 +1,4 @@
-.TH minimap2 1 "4 May 2019" "minimap2-2.17 (r941)" "Bioinformatics tools"
+.TH minimap2 1 "9 April 2021" "minimap2-2.18 (r1015)" "Bioinformatics tools"
 .SH NAME
 .PP
 minimap2 - mapping and alignment between collections of DNA sequences
@@ -121,6 +121,14 @@ provided as the target sequences, options
 .BR -w ,
 .B -I
 will be effectively overridden by the options stored in the index file.
+.TP
+.BI --alt \ FILE
+List of ALT contigs [null]
+.TP
+.BI --alt-drop \ FLOAT
+Drop ALT hits by
+.I FLOAT
+fraction when ranking and computing mapping quality [0.15]
 .SS Mapping options
 .TP 10
 .BI -f \ FLOAT | INT1 [, INT2 ]
@@ -229,7 +237,14 @@ or more of the shorter chain [0.5]
 .B --hard-mask-level
 Honor option
 .B -M
-and disable a heurstic to save unmapped subsequences.
+and disable a heurstic to save unmapped subsequences and disables
+.BR --mask-len .
+.TP
+.BI --mask-len \ NUM
+Keep an alignment if dropping it leaves an unaligned region on query longer than
+.IR INT
+[inf]. Effective without
+.BR --hard-mask-level .
 .TP
 .BI --max-chain-skip \ INT
 A heuristics that stops chaining early [25]. Minimap2 uses dynamic programming
@@ -245,6 +260,9 @@ Check up to
 partial chains during chaining [5000]. This is a heuristic to avoid quadratic
 time complexity in the worst case.
 .TP
+.BI --chain-gap-scale \ FLOAT
+Scale of gap cost during chaining [1.0]
+.TP
 .B --no-long-join
 Disable the long gap patching heuristic. When this option is applied, the
 maximum alignment gap is mostly controlled by
@@ -373,7 +391,7 @@ BED12 file can be converted from GTF/GFF3 with `paftools.js gff2bed anno.gtf'
 .BR --junc-bonus \ INT
 Score bonus for a splice donor or acceptor found in annotation (effective with
 .BR --junc-bed )
-[0].
+[9].
 .TP
 .BI --end-seed-pen \ INT
 Drop a terminal anchor if
@@ -1,6 +1,6 @@
 #!/usr/bin/env k8

-var paftools_version = '2.17-r949-dirty';
+var paftools_version = '2.18-r1015';

 /*****************************
 ***** Library functions *****
@@ -640,6 +640,23 @@ function paf_asmstat(args)
 		}
 	}

+	function AUN(lens, tot) {
+		lens.sort(function(a,b) { return b - a; });
+		if (tot == null) {
+			tot = 0;
+			for (var k = 0; k < lens.length; ++k)
+				tot += lens[k];
+		}
+		var x = 0, y = 0;
+		for (var k = 0; k < lens.length; ++k) {
+			var l = x + lens[k] <= tot? lens[k] : tot - x;
+			x += lens[k];
+			y += l * (l / tot);
+			if (x >= tot) break;
+		}
+		return y.toFixed(0);
+	}
+
 	function count_bp(bp, min_blen, min_gap) {
 		var n_bp = 0;
 		for (var k = 0; k < bp.length; ++k)
@@ -660,7 +677,7 @@ function paf_asmstat(args)
 		return (NM - n_gaps + n_gapo) / (n_M + n_gapo);
 	}

-	var labels = ['Length', 'l_cov', 'Rcov', 'Rdup', 'Qcov', 'NG75', 'NG50', 'NGA50', '#breaks', 'bp(' + min_seg_len + ',0)', 'bp(' + min_seg_len + ',10k)'];
+	var labels = ['Length', 'l_cov', 'Rcov', 'Rdup', 'Qcov', 'NG75', 'NG50', 'NGA50', 'AUNGA', '#breaks', 'bp(' + min_seg_len + ',0)', 'bp(' + min_seg_len + ',10k)'];
 	var rst = [];
 	for (var i = 0; i < labels.length; ++i)
 		rst[i] = [];
@@ -688,11 +705,9 @@ function paf_asmstat(args)
 			qinfo[t[0]].bp = [];
 			if (t.length < 9 || t[5] == "*") continue;
 			if (!/\ttp:A:[PI]/.test(line)) continue;
-			if ((m = /\tcg:Z:(\S+)/.exec(line)) == null) continue;
-			var cigar = m[1];
-			if ((m = /\tNM:i:(\d+)/.exec(line)) == null) continue;
-			var NM = parseInt(m[1]);
-			var diff = compute_diff(cigar, NM);
+			var cigar = (m = /\tcg:Z:(\S+)/.exec(line)) != null? m[1] : null;
+			var NM = (m = /\tNM:i:(\d+)/.exec(line)) != null? parseInt(m[1]) : null;
+			var diff = cigar != null && NM != null? compute_diff(cigar, NM) : 0;
 			t[2] = parseInt(t[2]);
 			t[3] = parseInt(t[3]);
 			t[7] = parseInt(t[7]);
@@ -765,10 +780,13 @@ function paf_asmstat(args)
 		// compute NGA50
 		rst[7][i] = N50(qblock_len, ref_len, 0.5);

+		// compute AUNGA
+		rst[8][i] = AUN(qblock_len, ref_len);
+
 		// compute break points
-		rst[8][i] = n_breaks;
-		rst[9][i] = count_bp(bp, 500, 0);
-		rst[10][i] = count_bp(bp, 500, 10000);
+		rst[9][i] = n_breaks;
+		rst[10][i] = count_bp(bp, 500, 0);
+		rst[11][i] = count_bp(bp, 500, 10000);

 		// nb-plot; NOT USED
 		/*
@@ -887,23 +905,24 @@ function paf_asmgene(args)
 	gene_nr[gene_list[last][0]] = 1;

 	// count and print
-	var col1 = ["full_sgl", "full_dup", "frag", "part50+", "part10+", "part10-"];
+	var col1 = ["full_sgl", "full_dup", "frag", "part50+", "part10+", "part10-", "dup_cnt", "dup_sum"];
 	var rst = [];
 	for (var k = 0; k < col1.length; ++k) {
 		rst[k] = [];
 		for (var i = 0; i < n_fn; ++i)
 			rst[k][i] = 0;
 	}
-	for (var g in gene) {
+	for (var g in gene) { // count single-copy genes
 		if (gene[g][0] == null || gene[g][0][0] != 1) continue;
 		if (gene_nr[g] == null) continue;
 		if (auto_only && /^(chr)?[XY]$/.test(refpos[g][2])) continue;
 		for (var i = 0; i < n_fn; ++i) {
 			if (gene[g][i] == null) {
-				rst[4][i]++;
+				rst[5][i]++;
 				if (print_err) print('M', header[i], refpos[g].join("\t"));
-			} else if (gene[g][i][0] == 1) rst[0][i]++;
-			else if (gene[g][i][0] > 1) {
+			} else if (gene[g][i][0] == 1) {
+				rst[0][i]++;
+			} else if (gene[g][i][0] > 1) {
 				rst[1][i]++;
 				if (print_err) print('D', header[i], refpos[g].join("\t"));
 			} else if (gene[g][i][1] >= opt.min_cov) {
@@ -921,6 +940,19 @@ function paf_asmgene(args)
 			}
 		}
 	}
+	for (var g in gene) { // count multi-copy genes
+		if (gene[g][0] == null || gene[g][0][0] <= 1) continue;
+		if (gene_nr[g] == null) continue;
+		if (auto_only && /^(chr)?[XY]$/.test(refpos[g][2])) continue;
+		for (var i = 0; i < n_fn; ++i) {
+			if (gene[g][i] != null) rst[7][i] += gene[g][i][0];
+			if (gene[g][i] != null && gene[g][i][0] > 1) {
+				rst[6][i]++;
+			} else if (print_err) {
+				print('d', header[i], gene[g][0][0], refpos[g].join("\t"));
+			}
+		}
+	}
 	print('H', 'Metric', header.join("\t"));
 	for (var k = 0; k < rst.length; ++k) {
 		print('X', col1[k], rst[k].join("\t"));
@@ -930,12 +962,13 @@ function paf_asmgene(args)

 function paf_stat(args)
 {
-	var c, gap_out_len = null;
-	while ((c = getopt(args, "l:")) != null)
+	var c, gap_out_len = null, count_err = false;
+	while ((c = getopt(args, "cl:")) != null)
 		if (c == 'l') gap_out_len = parseInt(getopt.arg);
+		else if (c == 'c') count_err = true;

 	if (getopt.ind == args.length) {
-		print("Usage: paftools.js stat [-l gapOutLen] <in.sam>|<in.paf>");
+		print("Usage: paftools.js stat [-c] [-l gapOutLen] <in.sam>|<in.paf>");
 		exit(1);
 	}

@@ -966,7 +999,7 @@ function paf_stat(args)
 		if (line.charAt(0) != '@') {
 			var t = line.split("\t", 12);
 			var m, rs, cigar = null, is_pri = false, is_sam = false, is_rev = false, tname = null;
-			var atlen = null, aqlen, qs, qe, mapq, ori_qlen;
+			var atlen = null, aqlen, qs, qe, mapq, ori_qlen, NM = null;
 			if (t.length < 2) continue;
 			if (t[4] == '+' || t[4] == '-' || t[4] == '*') { // PAF
 				if (t[4] == '*') continue; // unmapped
@@ -974,6 +1007,8 @@ function paf_stat(args)
 					++n_2nd;
 					continue;
 				}
+				if ((m = /\tNM:i:(\d+)/.exec(line)) != null)
+					NM = parseInt(m[1]);
 				if ((m = /\tcg:Z:(\S+)/.exec(line)) != null)
 					cigar = m[1];
 				if (cigar == null) {
@@ -995,6 +1030,8 @@ function paf_stat(args)
 					++n_2nd;
 					continue;
 				}
+				if ((m = /\tNM:i:(\d+)/.exec(line)) != null)
+					NM = parseInt(m[1]);
 				cigar = t[5];
 				tname = t[2];
 				rs = parseInt(t[3]) - 1;
@@ -1013,11 +1050,13 @@ function paf_stat(args)
 				++n_seq, last = t[0];
 			}
 			var M = 0, tl = 0, ql = 0, clip = [0, 0], n_cigar = 0, sclip = 0;
+			var n_gapo = 0, n_gap_all = 0, l_match = 0;
 			while ((m = re.exec(cigar)) != null) {
 				var l = parseInt(m[1]);
 				++n_cigar;
 				if (m[2] == 'M' || m[2] == '=' || m[2] == 'X') {
 					tl += l, ql += l, M += l;
+					l_match += l;
 				} else if (m[2] == 'I' || m[2] == 'D') {
 					var type;
 					if (l < 50) type = 0;
@@ -1030,6 +1069,7 @@ function paf_stat(args)
 					else tl += l, ++n_gap[1][type];
 					if (gap_out_len != null && l >= gap_out_len)
 						print(t[0], ql, is_rev? '-' : '+', tname, rs + tl, m[2], l);
+					++n_gapo, n_gap_all += l;
 				} else if (m[2] == 'N') {
 					tl += l;
 				} else if (m[2] == 'S') {
@@ -1047,6 +1087,12 @@ function paf_stat(args)
 				qs = clip[is_rev? 1 : 0], qe = qs + ql;
 				ori_qlen = clip[0] + ql + clip[1];
 			}
+			if (count_err && NM != null) {
+				var n_mm = NM - n_gap_all;
+				if (n_mm < 0) warn("WARNING: NM is smaller than the number of gaps at line " + lineno);
+				if (n_mm < 0) n_mm = 0;
+				print(t[0], ori_qlen, t[11], ori_qlen - (qe - qs), NM, l_match + n_gap_all, n_mm + n_gapo, l_match + n_gapo);
+			}
 			regs.push([qs, qe]);
 			last_qlen = ori_qlen;
 		}
@@ -1059,7 +1105,7 @@ function paf_stat(args)
 	file.close();
 	buf.destroy();

-	if (gap_out_len == null) {
+	if (gap_out_len == null && !count_err) {
 		print("Number of mapped sequences: " + n_seq);
 		print("Number of primary alignments: " + n_pri);
 		print("Number of secondary alignments: " + n_2nd);
@@ -2480,6 +2526,310 @@ function paf_ov_eval(args)
 	print((100 * (1 - n_missing / n_ovlp)).toFixed(2) + "% sensitivity");
 }

+function paf_vcfstat(args)
+{
+	var c, ts = { "AG":1, "GA":1, "CT":1, "TC":1 };
+	while ((c = getopt(args, "")) != null) {
+	}
+	var buf = new Bytes();
+	var file = args.length == getopt.ind? new File() : new File(args[getopt.ind]);
+	var x = { sub:0, ts:0, tv:0, ins:0, del:0, ins1:0, del1:0, ins2:0, del2:0, ins50:0, del50:0, ins1k:0, del1k:0, ins7k:0, del7k:0, insinf:0, delinf:0 };
+	while (file.readline(buf) >= 0) {
+		var t = buf.toString().split("\t");
+		if (t[0][0] == '#') continue;
+		var alt = t[4].split(",");
+		var ref = t[3];
+		for (var i = 0; i < alt.length; ++i) {
+			var a = alt[i];
+			if (a[0] == '<' || a[1] == '>') continue;
+			var l = ref.length < a.length? ref.length : a.length;
+			for (var j = 0; j < l; ++j) {
+				if (ref[j] != a[j]) {
+					++x.sub;
+					if (ts[ref[j] + a[j]]) ++x.ts;
+					else ++x.tv;
+				}
+			}
+			var d = a.length - ref.length;
+			if (d > 0) {
+				++x.ins;
+				if (d == 1) ++x.ins1;
+				else if (d == 2) ++x.ins2;
+				else if (d < 50) ++x.ins50;
+				else if (d < 1000) ++x.ins1k;
+				else if (d < 7000) ++x.ins7k;
+				else ++x.insinf;
+			} else if (d < 0) {
+				d = -d;
+				++x.del;
+				if (d == 1) ++x.del1;
+				else if (d == 2) ++x.del2;
+				else if (d < 50) ++x.del50;
+				else if (d < 1000) ++x.del1k;
+				else if (d < 7000) ++x.del7k;
+				else ++x.delinf;
+			}
+		}
+	}
+	file.close();
+	buf.destroy();
+	print("# substitutions: " + x.sub);
+	print("ts/tv: " + (x.ts / x.tv).toFixed(3));
+	print("# insertions: " + x.ins);
+	print("# 1bp insertions: " + x.ins1);
+	print("# 2bp insertions: " + x.ins2);
+	print("# [3,50) insertions: " + x.ins50);
+	print("# [50,1000) insertions: " + x.ins1k);
+	print("# [1000,7000) insertions: " + x.ins7k);
+	print("# >=7000 insertions: " + x.insinf);
+	print("# deletions: " + x.del);
+	print("# 1bp deletions: " + x.del1);
+	print("# 2bp deletions: " + x.del2);
+	print("# [3,50) deletions: " + x.del50);
+	print("# [50,1000) deletions: " + x.del1k);
+	print("# [1000,7000) deletions: " + x.del7k);
+	print("# >=7000 deletions: " + x.delinf);
+}
+
+function paf_parseNum(s) {
+	var m, x = null;
+	if ((m = /^(\d*\.?\d*)([mMgGkK]?)/.exec(s)) != null) {
+		x = parseFloat(m[1]);
+		if (m[2] == 'k' || m[2] == 'K') x *= 1000;
+		else if (m[2] == 'm' || m[2] == 'M') x *= 1000000;
+		else if (m[2] == 'g' || m[2] == 'G') x *= 1000000000;
+	}
+	return Math.floor(x + .499);
+}
+
+function paf_misjoin(args)
+{
+	var c, min_seg_len = 1000000, max_gap = 1000000, fn_cen = null, show_long = false, show_err = false, cen_ratio = 0.5;
+	var n_diff = [0, 0], n_gap = [0, 0], n_inv = [0, 0], n_inv_end = [0, 0];
+	while ((c = getopt(args, "l:g:c:per:")) != null) {
+		if (c == 'l') min_seg_len = paf_parseNum(getopt.arg);
+		else if (c == 'g') max_gap = paf_parseNum(getopt.arg);
+		else if (c == 'c') fn_cen = getopt.arg;
+		else if (c == 'r') cen_ratio = parseFloat(getopt.arg);
+		else if (c == 'p') show_long = true;
+		else if (c == 'e') show_err = true;
+	}
+	if (args.length == getopt.ind) {
+		print("Usage: paftools.js misjoin [options] <in.paf>");
+		print("Options:");
+		print("  -c FILE   BED for centromeres []");
+		print("  -r FLOAT  count a centromeric event if overlap ratio > FLOAT [" + cen_ratio + "]");
+		print("  -l NUM    min alignment block length [1m]");
+		print("  -g NUM    max gap size [1m]");
+		print("  -e        output misjoins not involving centromeres");
+		print("  -p        output long alignment blocks for debugging");
+		return;
+	}
+	var cen = {};
+	var file, buf = new Bytes();
+	if (fn_cen != null) {
+		file = new File(fn_cen);
+		while (file.readline(buf) >= 0) {
+			var t = buf.toString().split("\t");
+			if (cen[t[0]] == null) cen[t[0]] = [];
+			cen[t[0]].push([parseInt(t[1]), parseInt(t[2])]);
+		}
+		file.close();
+	}
+
+	function test_cen(cen, chr, st, en) {
+		var b = cen[chr], len = 0;
+		if (b == null) return false;
+		for (var j = 0; j < b.length; ++j)
+			if (b[j][0] < en && b[j][1] > st) {
+				var s = b[j][0] > st? b[j][0] : st;
+				var e = b[j][1] < en? b[j][1] : en;
+				len += e - s;
+			}
+		return len < (en - st) * cen_ratio? false : true;
+	}
+
+	function process(a) {
+		var k = 0;
+		for (var i = 0; i < a.length; ++i) {
+			for (var j = 1; j <= 3;  ++j) a[i][j] = parseInt(a[i][j]);
+			for (var j = 6; j <= 11; ++j) a[i][j] = parseInt(a[i][j]);
+			if (a[i][10] >= min_seg_len) a[k++] = a[i];
+		}
+		a.length = k;
+		if (a.length == 1) return;
+		a = a.sort(function(x,y){return x[2]-y[2]});
+		if (show_long) for (var i = 0; i < a.length; ++i) print(a[i].join("\t"));
+		for (var i = 1; i < a.length; ++i) {
+			var ov = [false, false];
+			ov[0] = test_cen(cen, a[i-1][5], a[i-1][7], a[i-1][8]);
+			ov[1] = test_cen(cen, a[i][5], a[i][7], a[i][8]);
+			if (a[i-1][5] != a[i][5]) { // different chr
+				if (ov[0] || ov[1]) ++n_diff[1];
+				else if (show_err) {
+					print("J", a[i-1].slice(0, 12).join("\t"));
+					print("J", a[i].slice(0, 12).join("\t"));
+				}
+				++n_diff[0];
+			} else if (a[i-1][4] == a[i][4]) { // a gap
+				var dq = a[i][2] - a[i-1][3];
+				var dr = a[i][4] == '+'? a[i][7] - a[i-1][8] : a[i-1][7] - a[i][8];
+				var gap = dr > dq? dr - dq : dq - dr;
+				if (gap > max_gap) {
+					if (ov[0] || ov[1]) ++n_gap[1];
+					else if (show_err) {
+						print("G", a[i-1].slice(0, 12).join("\t"));
+						print("G", a[i].slice(0, 12).join("\t"));
+					}
+					++n_gap[0];
+				}
+			} else if (i + 1 < a.length && a[i+1][4] == a[i-1][4]) { // bracketed inversion
+				if (ov[0] || ov[1]) ++n_inv[1];
+				else if (show_err) {
+					print("M", a[i-1].slice(0, 12).join("\t"));
+					print("M", a[i].slice(0, 12).join("\t"));
+					print("M", a[i+1].slice(0, 12).join("\t"));
+				}
+				++n_inv[0];
+				++i;
+			} else { // hanging inversion
+				if (ov[0] || ov[1]) ++n_inv_end[1];
+				++n_inv_end[0];
+			}
+		}
+	}
+
+	file = args[getopt.ind] == "-"? new File() : new File(args[getopt.ind]);
+	var a = [];
+	while (file.readline(buf) >= 0) {
+		var t = buf.toString().split("\t");
+		if (a.length > 0 && a[0][0] != t[0]) {
+			process(a);
+			a.length = 0;
+		}
+		a.push(t);
+	}
+	if (a.length > 0) process(a);
+	file.close();
+	buf.destroy();
+	print("# inter-chromosomal misjoins: " + n_diff.join(","));
+	print("# intra-chromosomal gaps: " + n_gap.join(","));
+	print("# candidate inversions in the middle: " + n_inv.join(","));
+	print("# candidate inversions at contig ends: " + n_inv_end.join(","));
+}
+
+function paf_sveval(args)
+{
+	var c, min_flt = 30, min_size = 50, max_size = 10000, win_size = 500, print_err = false, bed_fn = null;
+	while ((c = getopt(args, "f:i:x:w:er:")) != null) {
+		if (c == 'f') min_flt = paf_parseNum(getopt.arg);
+		else if (c == 'i') min_size = paf_parseNum(getopt.arg);
+		else if (c == 'x') max_size = paf_parseNum(getopt.arg);
+		else if (c == 'w') win_size = paf_parseNum(getopt.arg);
+		else if (c == 'r') bed_fn = getopt.arg;
+		else if (c == 'e') print_err = true;
+	}
+	if (args.length - getopt.ind < 2) {
+		print("Usage: paftools.js sveval [options] <base.vcf> <call.vcf>");
+		print("Options:");
+		print("  -r FILE    confident region in BED []");
+		print("  -f INT     min length to discard [" + min_flt + "]");
+		print("  -i INT     min SV length [" + min_size + "]");
+		print("  -x INT     max SV length [" + max_size + "]");
+		print("  -w INT     fuzzy windown size [" + win_size + "]");
+		print("  -e         print errors");
+		return;
+	}
+
+	function read_bed(fn) {
+		var buf = new Bytes();
+		var file = new File(fn);
+		var bed = {};
+		while (file.readline(buf) >= 0) {
+			var t = buf.toString().split("\t");
+			if (bed[t[0]] == null) bed[t[0]] = [];
+			bed[t[0]].push([parseInt(t[1]), parseInt(t[2])]);
+		}
+		file.close();
+		buf.destroy();
+		for (var x in bed) {
+			Interval.sort(bed[x]);
+			Interval.merge(bed[x]);
+			Interval.index_end(bed[x]);
+		}
+		return bed;
+	}
+
+	var bed = bed_fn != null? read_bed(bed_fn) : null;
+
+	function read_vcf(fn, bed) {
+		var buf = new Bytes();
+		var file = new File(fn);
+		var v = {};
+		while (file.readline(buf) >= 0) {
+			var m, t = buf.toString().split("\t");
+			if (t[0][0] == '#') continue;
+			if (bed != null && bed[t[0]] == null) continue;
+			if (t[4] == '<INV>' || t[4] == '<INVDUP>') continue; // no inversion
+			if (/[\[\]]/.test(t[4])) continue; // no break points
+			var st = parseInt(t[1]) - 1, en = st + t[3].length;
+			if ((m = /((;END)|(^END))=(\d+)/.exec(t[7])) != null)
+				en = parseInt(m[4]);
+			if (bed != null && Interval.find_ovlp(bed[t[0]], st, en).length == 0) continue;
+			// determine svlen
+			var s = t[4].split(","), max_del = 0, max_ins = 0;
+			for (var i = 0; i < s.length; ++i) {
+				var l = s[i].length - t[3].length;
+				if (l > 0)
+					max_ins = max_ins > l? max_ins : l;
+				else if (l < 0)
+					max_del = max_del > -l? max_del : -l;
+			}
+			if (max_ins < min_flt && max_del < min_flt) continue;
+			var svlen = max_ins > max_del? max_ins : -max_del;
+			if ((m = /((;SVLEN)|(^SVLEN))=(\d+)/.exec(t[7])) != null)
+				svlen = parseInt(m[4]);
+			var abslen = svlen > 0? svlen : -svlen;
+			if (abslen < min_flt || abslen > max_size) continue;
+			// insert
+			if (v[t[0]] == null) v[t[0]] = [];
+			v[t[0]].push([st, en, svlen, abslen]);
+		}
+		file.close();
+		buf.destroy();
+		for (var x in v) {
+			Interval.sort(v[x]);
+			Interval.index_end(v[x]);
+		}
+		return v;
+	}
+
+	function compare_vcf(v0, v1, label) {
+		var m = 0, n = 0;
+		for (var x in v1) {
+			var a1 = v1[x], a0 = v0[x];
+			for (var i = 0; i < a1.length; ++i) {
+				if (a1[i][3] < min_size) continue;
+				++n;
+				if (a0 == null) continue;
+				var st = a1[i][0] > win_size? a1[i][0] - win_size : 0;
+				b = Interval.find_ovlp(a0, st, a1[i][1] + win_size);
+				if (b.length > 0) ++m;
+				else if (print_err) print(label, x, a1[i].slice(0, 3).join("\t"));
+			}
+		}
+		return [n, m];
+	}
+
+	var v_base = read_vcf(args[getopt.ind+0], bed);
+	var v_call = read_vcf(args[getopt.ind+1], bed);
+	var fn = compare_vcf(v_call, v_base, 'FN');
+	var fp = compare_vcf(v_base, v_call, 'FP');
+	print('SN', fn[0], fn[1], (fn[1] / fn[0]).toFixed(6));
+	print('PC', fp[0], fp[1], (fp[1] / fp[0]).toFixed(6));
+	print('F1', ((fn[1] / fn[0] + fp[1] / fp[0]) / 2).toFixed(6));
+}
+
 /*************************
 ***** main function *****
 *************************/
@@ -2497,10 +2847,13 @@ function main(args)
 		print("");
 		print("  stat       collect basic mapping information in PAF/SAM");
 		print("  asmstat    collect basic assembly information");
-		print("  asmgene    evaluate gene completeness (EXPERIMENTAL)");
+		print("  asmgene    evaluate gene completeness");
+		print("  misjoin    evaluate large-scale misjoins");
 		print("  liftover   simplistic liftOver");
 		print("  call       call variants from asm-to-ref alignment with the cs tag");
 		print("  bedcov     compute the number of bases covered");
+		print("  vcfstat    VCF statistics");
+		print("  sveval     compare two SV callsets in VCF");
 		print("  version    print paftools.js version");
 		print("");
 		print("  mapeval    evaluate mapping accuracy using mason2/PBSIM-simulated FASTQ");
@@ -2520,6 +2873,7 @@ function main(args)
 	else if (cmd == 'stat') paf_stat(args);
 	else if (cmd == 'asmstat') paf_asmstat(args);
 	else if (cmd == 'asmgene') paf_asmgene(args);
+	else if (cmd == 'misjoin') paf_misjoin(args);
 	else if (cmd == 'liftover' || cmd == 'liftOver') paf_liftover(args);
 	else if (cmd == 'vcfpair') paf_vcfpair(args);
 	else if (cmd == 'call') paf_call(args);
@@ -2529,6 +2883,8 @@ function main(args)
 	else if (cmd == 'pbsim2fq') paf_pbsim2fq(args);
 	else if (cmd == 'junceval') paf_junceval(args);
 	else if (cmd == 'ov-eval') paf_ov_eval(args);
+	else if (cmd == 'vcfstat') paf_vcfstat(args);
+	else if (cmd == 'sveval') paf_sveval(args);
 	else if (cmd == 'version') print(paftools_version);
 	else throw Error("unrecognized command: " + cmd);
 }
@@ -4,6 +4,7 @@
 #include <assert.h>
 #include "minimap.h"
 #include "bseq.h"
+#include "kseq.h"

 #define MM_PARENT_UNSET   (-1)
 #define MM_PARENT_TMP_PRI (-2)
@@ -35,14 +36,6 @@
 extern "C" {
 #endif

-#ifndef KSTRING_T
-#define KSTRING_T kstring_t
-typedef struct __kstring_t {
-	unsigned l, m;
-	char *s;
-} kstring_t;
-#endif
-
 typedef struct {
 	int n_u, n_a;
 	uint64_t *u;
@@ -69,20 +62,21 @@ void mm_write_sam3(kstring_t *s, const mm_idx_t *mi, const mm_bseq1_t *t, int se
 void mm_idxopt_init(mm_idxopt_t *opt);
 const uint64_t *mm_idx_get(const mm_idx_t *mi, uint64_t minier, int *n);
 int32_t mm_idx_cal_max_occ(const mm_idx_t *mi, float f);
-mm128_t *mm_chain_dp(int max_dist_x, int max_dist_y, int bw, int max_skip, int max_iter, int min_cnt, int min_sc, int is_cdna, int n_segs, int64_t n, mm128_t *a, int *n_u_, uint64_t **_u, void *km);
+mm128_t *mm_chain_dp(int max_dist_x, int max_dist_y, int bw, int max_skip, int max_iter, int min_cnt, int min_sc, float gap_scale, int is_cdna, int n_segs, int64_t n, mm128_t *a, int *n_u_, uint64_t **_u, void *km);
 mm_reg1_t *mm_align_skeleton(void *km, const mm_mapopt_t *opt, const mm_idx_t *mi, int qlen, const char *qstr, int *n_regs_, mm_reg1_t *regs, mm128_t *a);

 mm_reg1_t *mm_gen_regs(void *km, uint32_t hash, int qlen, int n_u, uint64_t *u, mm128_t *a);
+void mm_mark_alt(const mm_idx_t *mi, int n, mm_reg1_t *r);
 void mm_split_reg(mm_reg1_t *r, mm_reg1_t *r2, int n, int qlen, mm128_t *a);
 void mm_sync_regs(void *km, int n_regs, mm_reg1_t *regs);
 int mm_squeeze_a(void *km, int n_regs, mm_reg1_t *regs, mm128_t *a);
 int mm_set_sam_pri(int n, mm_reg1_t *r);
-void mm_set_parent(void *km, float mask_level, int n, mm_reg1_t *r, int sub_diff, int hard_mask_level);
+void mm_set_parent(void *km, float mask_level, int mask_len, int n, mm_reg1_t *r, int sub_diff, int hard_mask_level, float alt_diff_frac);
 void mm_select_sub(void *km, float pri_ratio, int min_diff, int best_n, int *n_, mm_reg1_t *r);
 void mm_select_sub_multi(void *km, float pri_ratio, float pri1, float pri2, int max_gap_ref, int min_diff, int best_n, int n_segs, const int *qlens, int *n_, mm_reg1_t *r);
 void mm_filter_regs(const mm_mapopt_t *opt, int qlen, int *n_regs, mm_reg1_t *regs);
 void mm_join_long(void *km, const mm_mapopt_t *opt, int qlen, int *n_regs, mm_reg1_t *regs, mm128_t *a);
-void mm_hit_sort(void *km, int *n_regs, mm_reg1_t *r);
+void mm_hit_sort(void *km, int *n_regs, mm_reg1_t *r, float alt_diff_frac);
 void mm_set_mapq(void *km, int n_regs, mm_reg1_t *regs, int min_chain_sc, int match_sc, int rep_len, int is_sr);

 void mm_est_err(const mm_idx_t *mi, int qlen, int n_regs, mm_reg1_t *regs, const mm128_t *a, int32_t n, const uint64_t *mini_pos);
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <limits.h>
 #include "mmpriv.h"

 void mm_idxopt_init(mm_idxopt_t *opt)
@@ -24,8 +25,10 @@ void mm_mapopt_init(mm_mapopt_t *opt)
 	opt->max_gap_ref = -1;
 	opt->max_chain_skip = 25;
 	opt->max_chain_iter = 5000;
+	opt->chain_gap_scale = 1.0f;

 	opt->mask_level = 0.5f;
+	opt->mask_len = INT_MAX;
 	opt->pri_ratio = 0.8f;
 	opt->best_n = 5;

@@ -34,6 +37,8 @@ void mm_mapopt_init(mm_mapopt_t *opt)
 	opt->min_join_flank_sc = 1000;
 	opt->min_join_flank_ratio = 0.5f;

+	opt->alt_drop = 0.15f;
+
 	opt->a = 2, opt->b = 4, opt->q = 4, opt->e = 2, opt->q2 = 24, opt->e2 = 1;
 	opt->sc_ambi = 1;
 	opt->zdrop = 400, opt->zdrop_inv = 200;
@@ -6,7 +6,7 @@ cdef extern from "minimap.h":
 	#
 	ctypedef struct mm_idxopt_t:
 		short k, w, flag, bucket_bits
-		int mini_batch_size
+		int64_t mini_batch_size
 		uint64_t batch_size

 	ctypedef struct mm_mapopt_t:
@@ -20,12 +20,15 @@ cdef extern from "minimap.h":
 		int max_chain_skip, max_chain_iter
 		int min_cnt
 		int min_chain_score
+		float chain_gap_scale
 		float mask_level
+		int mask_len
 		float pri_ratio
 		int best_n
 		int max_join_long, max_join_short
 		int min_join_flank_sc
 		float min_join_flank_ratio
+		float alt_drop
 		int a, b, q, e, q2, e2
 		int sc_ambi
 		int noncan
@@ -41,7 +44,7 @@ cdef extern from "minimap.h":
 		int32_t min_mid_occ
 		int32_t mid_occ
 		int32_t max_occ
-		int mini_batch_size
+		int64_t mini_batch_size
 		int64_t max_sw_mat
 		const char *split_prefix

@@ -3,7 +3,7 @@ from libc.stdlib cimport free
 cimport cmappy
 import sys

-__version__ = '2.17'
+__version__ = '2.18'

 cmappy.mm_reset_timer()

@@ -4,16 +4,6 @@ except ImportError:
 	from distutils.core import setup
 	from distutils.extension import Extension

-cmdclass = {}
-
-try:
-	from Cython.Build import build_ext
-except ImportError: # without Cython
-	module_src = 'python/mappy.c'
-else: # with Cython
-	module_src = 'python/mappy.pyx'
-	cmdclass['build_ext'] = build_ext
-
 import sys, platform

 sys.path.append('python')
@@ -33,7 +23,7 @@ def readme():

 setup(
 	name = 'mappy',
-	version = '2.17',
+	version = '2.18',
 	url = 'https://github.com/lh3/minimap2',
 	description = 'Minimap2 python binding',
 	long_description = readme(),
@@ -42,8 +32,8 @@ setup(
 	license = 'MIT',
 	keywords = 'sequence-alignment',
 	scripts = ['python/minimap2.py'],
-    ext_modules = [Extension('mappy',
-		sources = [module_src, 'align.c', 'bseq.c', 'chain.c', 'format.c', 'hit.c', 'index.c', 'pe.c', 'options.c',
+	ext_modules = [Extension('mappy',
+		sources = ['python/mappy.pyx', 'align.c', 'bseq.c', 'chain.c', 'format.c', 'hit.c', 'index.c', 'pe.c', 'options.c',
 				   'ksw2_extd2_sse.c', 'ksw2_exts2_sse.c', 'ksw2_extz2_sse.c', 'ksw2_ll_sse.c',
 				   'kalloc.c', 'kthread.c', 'map.c', 'misc.c', 'sdust.c', 'sketch.c', 'esterr.c', 'splitidx.c'],
 		depends = ['minimap.h', 'bseq.h', 'kalloc.h', 'kdq.h', 'khash.h', 'kseq.h', 'ksort.h',
@@ -62,4 +52,4 @@ setup(
 		'Programming Language :: Python :: 3',
 		'Intended Audience :: Science/Research',
 		'Topic :: Scientific/Engineering :: Bio-Informatics'],
-	cmdclass = cmdclass)
+	setup_requires=["cython"])
Author	SHA1	Message	Date
Heng Li	b6ff332de1	Release minimap2-2.18 (r1015)	2021-04-09 13:33:34 -04:00
Heng Li	77abafaaf3	prepare for release	2021-04-09 13:18:56 -04:00
Heng Li	507d39af15	r1013: changed to a more accurate similarity est Based on DOI:10.1101/2021.01.15.426881. One minimap2 reviewer suggested the right formula to me but I thought the difference would be insignificant. I was wrong.	2021-04-08 13:57:53 -04:00
Heng Li	827ca4b461	r1012: fixed an off-by-one bug; resolves #489	2021-04-07 23:31:31 -04:00
Marcus Stoiber	d3dde2fdd4	Convert from spaces to tabs.	2021-04-05 11:55:10 -04:00
Marcus Stoiber	7db2e8d21a	Convert python install from build_ext to setuptools setup_requires.	2021-04-05 11:55:10 -04:00
Heng Li	0b41dd26a2	r1009: fixed a compiler warning	2021-04-05 11:43:13 -04:00
Heng Li	2b47846cd6	r1008: don't parse space in BED	2021-04-05 11:41:00 -04:00
Heng Li	67dd906a80	bump travis python version to 3.9	2021-03-23 09:12:49 -04:00
Heng Li	1b0bb7b0ba	require overlap ratio when considering centromere	2021-03-11 19:11:44 -05:00
Heng Li	1c4b7e8a48	explained --junc-bed in README	2021-03-06 19:44:24 -05:00
Heng Li	ecbc399fa2	improved sveval	2021-03-06 19:44:13 -05:00
Heng Li	4dfd495cc2	added sveval	2021-02-15 14:49:36 -05:00
Heng Li	194b457e79	option to print errors only	2021-02-07 12:58:03 -05:00
Heng Li	75c8933511	evaluate large-scale misjoins	2021-02-07 12:34:13 -05:00
Heng Li	1025993469	print number of errors on each read	2021-01-29 14:08:21 -05:00
Heng Li	a3253d1a6b	added a command for simple VCF statistics	2021-01-14 12:24:38 -05:00
Heng Li	2da649d1d7	Merge remote-tracking branch 'origin/master'	2020-11-15 18:47:15 -05:00
Heng Li	f995f55610	added --mask-len for #659	2020-08-21 11:12:50 -04:00
Armin Töpfer	c9874e2dc5	Initialize r->p if ez->zdropped	2020-06-12 09:22:18 -04:00
Heng Li	ccb0f7b05d	added a new Makefile for simde	2020-04-25 22:43:29 -04:00
mbrcic	66db9da7d8	changed preprocessor conditionals for SIMDe	2020-04-22 19:50:59 +02:00
mbrcic	2b3403f094	fix for Neon after test.	2020-04-21 02:08:21 +02:00
mbrcic	3e16e4e39d	Added documentation entry for added functionality, simde and no_simd.	2020-04-21 01:36:19 +02:00
mbrcic	f47e8a525e	SIMDe made optional. Include paths changes for SIMDe.	2020-04-21 01:08:32 +02:00
mbrcic	c172df7d2d	fix for Neon	2020-04-20 21:14:15 +02:00
mbrcic	9e6fdd376b	Changed sse2neon with SIMDe. Added building non-SIMD version.	2020-04-20 18:28:06 +02:00
Heng Li	29f67a1666	r982: more accurate sum; output errors	2020-04-14 16:18:53 -04:00
Heng Li	adde608a42	Merge remote-tracking branch 'refs/remotes/origin/master'	2020-04-14 15:52:57 -04:00
Heng Li	f10dff78dc	r981: asmgene to check duplicate genes	2020-04-14 15:52:36 -04:00
Jun Aruga	d97bba9f27	travis: added arm64 test.	2020-04-13 08:33:03 -04:00
Heng Li	50775362bb	r980: support auNGA	2020-04-10 21:36:59 -04:00
Heng Li	0a5e386359	r979: fixed asmgene wrong report. Resolves #581 .	2020-04-06 19:57:15 -04:00
Heng Li	cb56fb762a	Merge branch 'master' of github.com:lh3/minimap2	2020-03-22 19:17:01 -04:00
Heng Li	e2451e497a	r975: asmstat without CIGAR/NM	2020-03-22 19:16:43 -04:00
Jared Simpson	d2de282d21	remove second definition of kstring	2020-03-02 13:18:37 -05:00
Jared Simpson	48cb80ea94	change kstring_t integer storage size This is for compatibility with kstring_t in htslib.	2020-02-28 09:35:51 -05:00
Heng Li	6a4b9f9082	r974: more informative msg on wrong FASTQ records Resolves #510	2020-01-21 10:56:59 -05:00
Heng Li	a7a01fe5bd	r973: fixed compiling errors caused	2020-01-21 10:43:31 -05:00
Heng Li	9dceae59a0	r972: renamed --alt-diff to --alt-drop	2020-01-21 10:33:39 -05:00
Heng Li	20a3987082	Merge branch 'master' into alt	2020-01-21 09:17:50 -05:00
Heng Li	eb3ed6993d	support ALT mapping	2020-01-21 09:17:50 -05:00
Heng Li	7996f04008	r972: fixed negative de:f caused by ambiguous base	2020-01-21 09:14:37 -05:00
Heng Li	d2e14705e7	r968: allow large mini_batch; resolves #491	2020-01-18 12:24:44 -05:00
Heng Li	24f50f38e8	r967: no duplicated @SQ lines with --split-prefix resolves #527 and #400	2020-01-18 12:01:28 -05:00
Heng Li	04e015d803	r966: minimap2 returns 1 on file failure (#532 )	2020-01-18 10:58:59 -05:00
Heng Li	040f74102c	r965: added --chain-gap-scale for #540	2020-01-18 10:29:33 -05:00