Merge branch 'master' into feature/typed-regex

15 files changed, 406 insertions, 337 deletions

diff --git a/ChangeLog b/ChangeLog
index 09d2a22f..755be27b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2016-09-09         Norihiro Tanaka      <noritnk@kcn.ne.jp>
+
+	* awk.h (struct Regexp): Remove member has_anchor.  All uses removed.
+	* re.c (make_regexp, research): Use dfa matcher for regex with anchor.
+
 2016-09-09         Arnold D. Robbins     <arnold@skeeve.com>
 
 	* dfa.c: Sync with grep.
diff --git a/awk.h b/awk.h
index 58f5f13f..639795aa 100644
--- a/awk.h
+++ b/awk.h
@@ -210,7 +210,6 @@ typedef struct Regexp {
 	struct re_pattern_buffer pat;
 	struct re_registers regs;
 	struct dfa *dfareg;
-	bool has_anchor;	/* re has anchors which dfa avoids */
 	bool non_empty;		/* for use in fpat_parse_field */
 	bool has_meta;		/* re has meta chars so (probably) isn't simple string */
 	bool maybe_long;	/* re has meta chars that can match long text */
diff --git a/awklib/eg/lib/groupawk.in b/awklib/eg/lib/groupawk.in
index 54a27f3d..f9e1e203 100644
--- a/awklib/eg/lib/groupawk.in
+++ b/awklib/eg/lib/groupawk.in
@@ -38,7 +38,7 @@ function _gr_init(    oldfs, oldrs, olddol0, grcat,
         n = split($4, a, "[ \t]*,[ \t]*")
         for (i = 1; i <= n; i++)
             if (a[i] in _gr_groupsbyuser)
-                _gr_groupsbyuser[a[i]] = gr_groupsbyuser[a[i]] " " $1
+                _gr_groupsbyuser[a[i]] = _gr_groupsbyuser[a[i]] " " $1
             else
                 _gr_groupsbyuser[a[i]] = $1
 
diff --git a/doc/ChangeLog b/doc/ChangeLog
index ce21ba92..294743ba 100644
--- a/doc/ChangeLog
+++ b/doc/ChangeLog
@@ -1,3 +1,11 @@
+2016-09-20         Arnold D. Robbins     <arnold@skeeve.com>
+
+	* gawktexi.in (Group Functions): Typo fix. Reported
+	by Jaromir Obr <jaromir.obr@gmail.com>.
+	(Time Functions): Slightly enhance description of ISO 8601
+	definition of first and last weeks. Thanks to
+	Michel de Ruiter <mdruiter@gmail.com> for the note.
+
 2016-08-25         Arnold D. Robbins     <arnold@skeeve.com>
 
 	* gawktexi.in (POSIX String Comparison): Update for new
diff --git a/doc/gawk.info b/doc/gawk.info
index c39afa4f..21aedf25 100644
--- a/doc/gawk.info
+++ b/doc/gawk.info
@@ -13336,8 +13336,8 @@ the following date format specifications:
      of week one) as a decimal number (01-53).  The method for
      determining the week number is as specified by ISO 8601.  (To wit:
      if the week containing January 1 has four or more days in the new
-     year, then it is week one; otherwise it is week 53 of the previous
-     year and the next week is week one.)
+     year, then it is week one; otherwise it is the last week [52 or 53]
+     of the previous year and the next week is week one.)
 
 '%w'
      The weekday as a decimal number (0-6).  Sunday is day zero.
@@ -16424,7 +16424,7 @@ the same names:
              n = split($4, a, "[ \t]*,[ \t]*")
              for (i = 1; i <= n; i++)
                  if (a[i] in _gr_groupsbyuser)
-                     _gr_groupsbyuser[a[i]] = gr_groupsbyuser[a[i]] " " $1
+                     _gr_groupsbyuser[a[i]] = _gr_groupsbyuser[a[i]] " " $1
                  else
                      _gr_groupsbyuser[a[i]] = $1
 
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-Ref: Time Functions-Footnote-1570942
-Ref: Time Functions-Footnote-2571010
-Ref: Time Functions-Footnote-3571168
-Ref: Time Functions-Footnote-4571279
-Ref: Time Functions-Footnote-5571391
-Ref: Time Functions-Footnote-6571618
-Node: Bitwise Functions571884
-Ref: table-bitwise-ops572478
-Ref: Bitwise Functions-Footnote-1576816
-Node: Type Functions576989
-Node: I18N Functions579650
-Node: User-defined581301
-Node: Definition Syntax582106
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-Node: Round Function630911
-Node: Cliff Random Function632452
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-Ref: Join Function-Footnote-1638763
-Node: Getlocaltime Function638963
-Node: Readfile Function642705
-Node: Shell Quoting644677
-Node: Data File Management646078
-Node: Filetrans Function646710
-Node: Rewind Function650806
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-Node: Empty Files654247
-Node: Ignoring Assigns656226
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+Ref: Ranges and Locales-Footnote-31116736
+Node: Contributors1116957
+Node: History summary1122517
+Node: Installation1123897
+Node: Gawk Distribution1124841
+Node: Getting1125325
+Node: Extracting1126286
+Node: Distribution contents1127924
+Node: Unix Installation1134018
+Node: Quick Installation1134700
+Node: Shell Startup Files1137114
+Node: Additional Configuration Options1138192
+Node: Configuration Philosophy1139997
+Node: Non-Unix Installation1142366
+Node: PC Installation1142824
+Node: PC Binary Installation1144144
+Node: PC Compiling1145996
+Ref: PC Compiling-Footnote-11148790
+Node: PC Testing1148899
+Node: PC Using1150079
+Ref: PC Using-Footnote-11154232
+Node: Cygwin1154305
+Node: MSYS1155075
+Node: VMS Installation1155576
+Node: VMS Compilation1156367
+Ref: VMS Compilation-Footnote-11157596
+Node: VMS Dynamic Extensions1157654
+Node: VMS Installation Details1159339
+Node: VMS Running1161592
+Node: VMS GNV1165871
+Node: VMS Old Gawk1166606
+Node: Bugs1167077
+Node: Other Versions1171392
+Node: Installation summary1177976
+Node: Notes1179027
+Node: Compatibility Mode1179892
+Node: Additions1180674
+Node: Accessing The Source1181599
+Node: Adding Code1183034
+Node: New Ports1189253
+Node: Derived Files1193741
+Ref: Derived Files-Footnote-11199226
+Ref: Derived Files-Footnote-21199261
+Ref: Derived Files-Footnote-31199859
+Node: Future Extensions1199973
+Node: Implementation Limitations1200631
+Node: Extension Design1201814
+Node: Old Extension Problems1202968
+Ref: Old Extension Problems-Footnote-11204486
+Node: Extension New Mechanism Goals1204543
+Ref: Extension New Mechanism Goals-Footnote-11207907
+Node: Extension Other Design Decisions1208096
+Node: Extension Future Growth1210209
+Node: Old Extension Mechanism1211045
+Node: Notes summary1212808
+Node: Basic Concepts1213990
+Node: Basic High Level1214671
+Ref: figure-general-flow1214953
+Ref: figure-process-flow1215638
+Ref: Basic High Level-Footnote-11218939
+Node: Basic Data Typing1219124
+Node: Glossary1222452
+Node: Copying1254399
+Node: GNU Free Documentation License1291938
+Node: Index1317056
 
 End Tag Table
diff --git a/doc/gawk.texi b/doc/gawk.texi
index 60dfe961..b24445e3 100644
--- a/doc/gawk.texi
+++ b/doc/gawk.texi
@@ -19128,8 +19128,8 @@ The week number of the year (with the first Monday as the first
 day of week one) as a decimal number (01--53).
 The method for determining the week number is as specified by ISO 8601.
 (To wit: if the week containing January 1 has four or more days in the
-new year, then it is week one; otherwise it is week 53 of the previous year
-and the next week is week one.)
+new year, then it is week one; otherwise it is the last week
+[52 or 53] of the previous year and the next week is week one.)
 
 @item %w
 The weekday as a decimal number (0--6).  Sunday is day zero.
@@ -23221,7 +23221,7 @@ function _gr_init(    oldfs, oldrs, olddol0, grcat,
         n = split($4, a, "[ \t]*,[ \t]*")
         for (i = 1; i <= n; i++)
             if (a[i] in _gr_groupsbyuser)
-                _gr_groupsbyuser[a[i]] = gr_groupsbyuser[a[i]] " " $1
+                _gr_groupsbyuser[a[i]] = _gr_groupsbyuser[a[i]] " " $1
             else
                 _gr_groupsbyuser[a[i]] = $1
 
diff --git a/doc/gawktexi.in b/doc/gawktexi.in
index 546f7611..647bb0fb 100644
--- a/doc/gawktexi.in
+++ b/doc/gawktexi.in
@@ -18240,8 +18240,8 @@ The week number of the year (with the first Monday as the first
 day of week one) as a decimal number (01--53).
 The method for determining the week number is as specified by ISO 8601.
 (To wit: if the week containing January 1 has four or more days in the
-new year, then it is week one; otherwise it is week 53 of the previous year
-and the next week is week one.)
+new year, then it is week one; otherwise it is the last week
+[52 or 53] of the previous year and the next week is week one.)
 
 @item %w
 The weekday as a decimal number (0--6).  Sunday is day zero.
@@ -22303,7 +22303,7 @@ function _gr_init(    oldfs, oldrs, olddol0, grcat,
         n = split($4, a, "[ \t]*,[ \t]*")
         for (i = 1; i <= n; i++)
             if (a[i] in _gr_groupsbyuser)
-                _gr_groupsbyuser[a[i]] = gr_groupsbyuser[a[i]] " " $1
+                _gr_groupsbyuser[a[i]] = _gr_groupsbyuser[a[i]] " " $1
             else
                 _gr_groupsbyuser[a[i]] = $1
 
diff --git a/re.c b/re.c
index da6982ea..13173290 100644
--- a/re.c
+++ b/re.c
@@ -49,7 +49,6 @@ make_regexp(const char *s, size_t len, bool ignorecase, bool dfa, bool canfatal)
 	int c, c2;
 	static bool first = true;
 	static bool no_dfa = false;
-	bool has_anchor = false;
 	reg_syntax_t dfa_syn;
 	int i;
 
@@ -160,9 +159,6 @@ make_regexp(const char *s, size_t len, bool ignorecase, bool dfa, bool canfatal)
 			} /* switch */
 		} else {
 			c = *src;
-			if (c == '^' || c == '$')
-				has_anchor = true;
-
 			*dest++ = *src++;	/* not '\\' */
 		}
 		if (gawk_mb_cur_max > 1 && is_multibyte)
@@ -228,11 +224,10 @@ make_regexp(const char *s, size_t len, bool ignorecase, bool dfa, bool canfatal)
 	if (dfa && ! no_dfa) {
 		rp->dfareg = dfaalloc();
 		dfasyntax(rp->dfareg, & localeinfo, dfa_syn,
-			  ignorecase ? DFA_CASE_FOLD : 0);
+			  (ignorecase ? DFA_CASE_FOLD : 0) | DFA_ANCHOR);
 		dfacomp(buf, len, rp->dfareg, true);
 	} else
 		rp->dfareg = NULL;
-	rp->has_anchor = has_anchor;
 
 	/* Additional flags that help with RS as regexp. */
 	for (i = 0; i < len; i++) {
@@ -287,7 +282,7 @@ research(Regexp *rp, char *str, int start,
 			ret = dfaexec(superset, str+start, str+start+len,
 							true, NULL, NULL);
 
-		if (ret && ((! need_start && ! rp->has_anchor)
+		if (ret && (! need_start
 				|| (! superset && dfaisfast(rp->dfareg))))
 			ret = dfaexec(rp->dfareg, str+start, str+start+len,
 						true, NULL, &try_backref);
@@ -298,7 +293,6 @@ research(Regexp *rp, char *str, int start,
 			|| start != 0
 			|| no_bol
 			|| need_start
-			|| rp->has_anchor
 			|| try_backref) {
 			/*
 			 * Passing NULL as last arg speeds up search for cases
diff --git a/test/ChangeLog b/test/ChangeLog
index eae30fd9..57b0e602 100644
--- a/test/ChangeLog
+++ b/test/ChangeLog
@@ -1,3 +1,8 @@
+2016-09-09         Norihiro Tanaka      <noritnk@kcn.ne.jp>
+
+	* Makefile.am (anchor): New test.
+	* anchor.awk, anchor.in, anchor.ok: New files.
+
 2016-08-25         Arnold D. Robbins     <arnold@skeeve.com>
 
 	* 4.1.4: Release tar ball made.
diff --git a/test/Makefile.am b/test/Makefile.am
index f0adb5a5..2ca18c24 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -47,6 +47,9 @@ EXTRA_DIST = \
 	anchgsub.awk \
 	anchgsub.in \
 	anchgsub.ok \
+	anchor.awk \
+	anchor.in \
+	anchor.ok \
 	argarray.awk \
 	argarray.in \
 	argarray.ok \
@@ -1147,7 +1150,7 @@ CLEANFILES = core core.* fmtspcl.ok
 
 # try to keep these sorted. each letter starts a new line
 BASIC_TESTS = \
-	addcomma anchgsub argarray arrayind1 arrayind2 arrayparm arrayprm2 arrayprm3 \
+	addcomma anchgsub anchor argarray arrayind1 arrayind2 arrayparm arrayprm2 arrayprm3 \
 	arrayref arrymem1 arryref2 arryref3 arryref4 arryref5 arynasty \
 	arynocls aryprm1 aryprm2 aryprm3 aryprm4 aryprm5 aryprm6 aryprm7 \
 	aryprm8 aryprm9 arysubnm asgext awkpath \
diff --git a/test/Makefile.in b/test/Makefile.in
index 484aa780..a0520a55 100644
--- a/test/Makefile.in
+++ b/test/Makefile.in
@@ -304,6 +304,9 @@ EXTRA_DIST = \
 	anchgsub.awk \
 	anchgsub.in \
 	anchgsub.ok \
+	anchor.awk \
+	anchor.in \
+	anchor.ok \
 	argarray.awk \
 	argarray.in \
 	argarray.ok \
@@ -1403,7 +1406,7 @@ CLEANFILES = core core.* fmtspcl.ok
 
 # try to keep these sorted. each letter starts a new line
 BASIC_TESTS = \
-	addcomma anchgsub argarray arrayind1 arrayind2 arrayparm arrayprm2 arrayprm3 \
+	addcomma anchgsub anchor argarray arrayind1 arrayind2 arrayparm arrayprm2 arrayprm3 \
 	arrayref arrymem1 arryref2 arryref3 arryref4 arryref5 arynasty \
 	arynocls aryprm1 aryprm2 aryprm3 aryprm4 aryprm5 aryprm6 aryprm7 \
 	aryprm8 aryprm9 arysubnm asgext awkpath \
@@ -2796,6 +2799,11 @@ anchgsub:
 	@AWKPATH="$(srcdir)" $(AWK) -f $@.awk  < "$(srcdir)"/$@.in >_$@ 2>&1 || echo EXIT CODE: $$? >>_$@
 	@-$(CMP) "$(srcdir)"/$@.ok _$@ && rm -f _$@
 
+anchor:
+	@echo $@
+	@AWKPATH="$(srcdir)" $(AWK) -f $@.awk  < "$(srcdir)"/$@.in >_$@ 2>&1 || echo EXIT CODE: $$? >>_$@
+	@-$(CMP) "$(srcdir)"/$@.ok _$@ && rm -f _$@
+
 arrayind1:
 	@echo $@
 	@AWKPATH="$(srcdir)" $(AWK) -f $@.awk  < "$(srcdir)"/$@.in >_$@ 2>&1 || echo EXIT CODE: $$? >>_$@
diff --git a/test/Maketests b/test/Maketests
index 951590ac..081d96ef 100644
--- a/test/Maketests
+++ b/test/Maketests
@@ -10,6 +10,11 @@ anchgsub:
 	@AWKPATH="$(srcdir)" $(AWK) -f $@.awk  < "$(srcdir)"/$@.in >_$@ 2>&1 || echo EXIT CODE: $$? >>_$@
 	@-$(CMP) "$(srcdir)"/$@.ok _$@ && rm -f _$@
 
+anchor:
+	@echo $@
+	@AWKPATH="$(srcdir)" $(AWK) -f $@.awk  < "$(srcdir)"/$@.in >_$@ 2>&1 || echo EXIT CODE: $$? >>_$@
+	@-$(CMP) "$(srcdir)"/$@.ok _$@ && rm -f _$@
+
 arrayind1:
 	@echo $@
 	@AWKPATH="$(srcdir)" $(AWK) -f $@.awk  < "$(srcdir)"/$@.in >_$@ 2>&1 || echo EXIT CODE: $$? >>_$@
diff --git a/test/anchor.awk b/test/anchor.awk
new file mode 100644
index 00000000..56f47569
--- /dev/null
+++ b/test/anchor.awk
@@ -0,0 +1,33 @@
+BEGIN { RS = "" }
+
+{
+	if (/^A/)
+		print "ok"
+	else
+		print "not ok"
+
+	if (/B$/)
+		print "not ok"
+	else
+		print "ok"
+
+	if (/^C/)
+		print "not ok"
+	else
+		print "ok"
+
+	if (/D$/)
+		print "not ok"
+	else
+		print "ok"
+
+	if (/^E/)
+		print "not ok"
+	else
+		print "ok"
+
+	if (/F$/)
+		print "ok"
+	else
+		print "not ok"
+}
diff --git a/test/anchor.in b/test/anchor.in
new file mode 100644
index 00000000..a97e9859
--- /dev/null
+++ b/test/anchor.in
@@ -0,0 +1,3 @@
+A line1 B
+C line2 D
+E line3 F
diff --git a/test/anchor.ok b/test/anchor.ok
new file mode 100644
index 00000000..7780b88b
--- /dev/null
+++ b/test/anchor.ok
@@ -0,0 +1,6 @@
+ok
+ok
+ok
+ok
+ok
+ok