parallel: --regexp . no longer matches \n. Allow for pre-record garbage.

README

@@ -40,13 +40,13 @@ installation.
 
     $ (wget -O - pi.dk/3 || lynx -source pi.dk/3 || curl pi.dk/3/ || \
        fetch -o - http://pi.dk/3 ) > install.sh
-    $ sha1sum install.sh | grep 67bd7bc7dc20aff99eb8f1266574dadb
+    $ sha1sum install.sh | grep c82233e7da3166308632ac8c34f850c0
-    12345678 67bd7bc7 dc20aff9 9eb8f126 6574dadb
+    12345678 c82233e7 da316630 8632ac8c 34f850c0
-    $ md5sum install.sh | grep b7a15cdbb07fb6e11b0338577bc1780f
+    $ md5sum install.sh | grep ae3d7aac5e15cf3dfc87046cfc5918d2
-    b7a15cdb b07fb6e1 1b033857 7bc1780f
+    ae3d7aac 5e15cf3d fc87046c fc5918d2
-    $ sha512sum install.sh | grep 186000b62b66969d7506ca4f885e0c80e02a22444
+    $ sha512sum install.sh | grep dfc00d823137271a6d96225cea9e89f533ff6c81f
-    6f25960b d4b90cf6 ba5b76de c1acdf39 f3d24249 72930394 a4164351 93a7668d
+    9c5198d5 31a3b755 b7910ece 3a42d206 c804694d fc00d823 137271a6 d96225ce
-    21ff9839 6f920be5 186000b6 2b66969d 7506ca4f 885e0c80 e02a2244 40e8a43f
+    a9e89f53 3ff6c81f f52b298b ef9fb613 2d3f9ccd 0e2c7bd3 c35978b5 79acb5ca
     $ bash install.sh
 
 This will literally install faster than reading the rest of this

doc/release_new_version

@@ -201,9 +201,9 @@ from:tange@gnu.org
 to:parallel@gnu.org, bug-parallel@gnu.org
 stable-bcc: Jesse Alama <jessealama@fastmail.fm>
 
-Subject: GNU Parallel 20210322 ('Sarkozy/Sarah Everard/AstraZeneca/ Meghan<<>>') released <<[stable]>>
+Subject: GNU Parallel 20210422 ('<<>>') released <<[stable]>>
 
-GNU Parallel 20210322 ('2002-01-06') <<[stable]>> has been released. It is available for download at: http://ftpmirror.gnu.org/parallel/
+GNU Parallel 20210322 ('<<>>') <<[stable]>> has been released. It is available for download at: http://ftpmirror.gnu.org/parallel/
 
 <<No new functionality was introduced so this is a good candidate for a stable release.>>
 
@@ -213,8 +213,7 @@ It does not have to be as detailed as Juan's. It is perfectly fine if you just s
 
 Quote of the month:
 
-  GNU Parallel is my new favorite thing
+  <<>>
-    -- Will Tejeda @thewilltejeda
   
 New in this release:
 
@@ -222,33 +221,7 @@ New in this release:
 
 News about GNU Parallel:
 
-* The very first version of Parallel dated 2002-01-06 was found in an
+<<>>
-  old backup:
-
-  #!/usr/bin/perl
-
-  $processes=shift;
-
-  chomp(@jobs=<>);
-  for (@jobs) {
-      $jobnr++;
-      push @makefile,
-      (".PHONY : job$jobnr\n",
-       "job$jobnr :\n",
-       "\t$_\n");
-  }
-  unshift @makefile, "all : ",(map { "job$_ " } 1 .. $jobnr),"\n";
-  
-  open (MAKE, "| make -k -f - -j $processes") || die;
-  print MAKE @makefile;
-  close MAKE;
-
-* Introduction to GNU Parallel https://www.youtube.com/watch?v=Kj-6JkAqw-8
-
-* Using GNU Parallel with GooseSLURM https://readthedocs.org/projects/gooseslurm/downloads/pdf/latest/#chapter.7
-
-* Why GNU-parallel?
-  https://github.com/lijingbu/omics/blob/main/why_gnu_parallel.md
 
 Get the book: GNU Parallel 2018 http://www.lulu.com/shop/ole-tange/gnu-parallel-2018/paperback/product-23558902.html
 
@@ -280,13 +253,13 @@ You can install GNU Parallel in just 10 seconds with:
 
     $ (wget -O - pi.dk/3 || lynx -source pi.dk/3 || curl pi.dk/3/ || \
        fetch -o - http://pi.dk/3 ) > install.sh
-    $ sha1sum install.sh | grep 3374ec53bacb199b245af2dda86df6c9
+    $ sha1sum install.sh | grep c82233e7da3166308632ac8c34f850c0
-    12345678 3374ec53 bacb199b 245af2dd a86df6c9
+    12345678 c82233e7 da316630 8632ac8c 34f850c0
-    $ md5sum install.sh | grep 029a9ac06e8b5bc6052eac57b2c3c9ca
+    $ md5sum install.sh | grep ae3d7aac5e15cf3dfc87046cfc5918d2
-    029a9ac0 6e8b5bc6 052eac57 b2c3c9ca
+    ae3d7aac 5e15cf3d fc87046c fc5918d2
-    $ sha512sum install.sh | grep f517006d9897747bed8a4694b1acba1b
+    $ sha512sum install.sh | grep dfc00d823137271a6d96225cea9e89f533ff6c81f
-    40f53af6 9e20dae5 713ba06c f517006d 9897747b ed8a4694 b1acba1b 1464beb4
+    9c5198d5 31a3b755 b7910ece 3a42d206 c804694d fc00d823 137271a6 d96225ce
-    60055629 3f2356f3 3e9c4e3c 76e3f3af a9db4b32 bd33322b 975696fc e6b23cfb
+    a9e89f53 3ff6c81f f52b298b ef9fb613 2d3f9ccd 0e2c7bd3 c35978b5 79acb5ca
     $ bash install.sh
 
 Watch the intro video on http://www.youtube.com/playlist?list=PL284C9FF2488BC6D1

src/env_parallel.ash

@@ -385,7 +385,7 @@ _parset_main() {
 	return 255
     fi
     if [ "$_parset_NAME" = "--version" ] ; then
-	echo "parset 20210322 (GNU parallel `parallel --minversion 1`)"
+	echo "parset 20210323 (GNU parallel `parallel --minversion 1`)"
 	echo "Copyright (C) 2007-2021 Ole Tange, http://ole.tange.dk and Free Software"
 	echo "Foundation, Inc."
 	echo "License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>"

src/env_parallel.dash

@@ -385,7 +385,7 @@ _parset_main() {
 	return 255
     fi
     if [ "$_parset_NAME" = "--version" ] ; then
-	echo "parset 20210322 (GNU parallel `parallel --minversion 1`)"
+	echo "parset 20210323 (GNU parallel `parallel --minversion 1`)"
 	echo "Copyright (C) 2007-2021 Ole Tange, http://ole.tange.dk and Free Software"
 	echo "Foundation, Inc."
 	echo "License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>"

src/env_parallel.ksh

@@ -368,7 +368,7 @@ _parset_main() {
 	return 255
     fi
     if [ "$_parset_NAME" = "--version" ] ; then
-	echo "parset 20210322 (GNU parallel `parallel --minversion 1`)"
+	echo "parset 20210323 (GNU parallel `parallel --minversion 1`)"
 	echo "Copyright (C) 2007-2021 Ole Tange, http://ole.tange.dk and Free Software"
 	echo "Foundation, Inc."
 	echo "License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>"

src/env_parallel.mksh

@@ -371,7 +371,7 @@ _parset_main() {
 	return 255
     fi
     if [ "$_parset_NAME" = "--version" ] ; then
-	echo "parset 20210322 (GNU parallel `parallel --minversion 1`)"
+	echo "parset 20210323 (GNU parallel `parallel --minversion 1`)"
 	echo "Copyright (C) 2007-2021 Ole Tange, http://ole.tange.dk and Free Software"
 	echo "Foundation, Inc."
 	echo "License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>"

src/env_parallel.sh

@@ -385,7 +385,7 @@ _parset_main() {
 	return 255
     fi
     if [ "$_parset_NAME" = "--version" ] ; then
-	echo "parset 20210322 (GNU parallel `parallel --minversion 1`)"
+	echo "parset 20210323 (GNU parallel `parallel --minversion 1`)"
 	echo "Copyright (C) 2007-2021 Ole Tange, http://ole.tange.dk and Free Software"
 	echo "Foundation, Inc."
 	echo "License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>"

src/env_parallel.zsh

@@ -362,7 +362,7 @@ _parset_main() {
 	return 255
     fi
     if [ "$_parset_NAME" = "--version" ] ; then
-	echo "parset 20210322 (GNU parallel `parallel --minversion 1`)"
+	echo "parset 20210323 (GNU parallel `parallel --minversion 1`)"
 	echo "Copyright (C) 2007-2021 Ole Tange, http://ole.tange.dk and Free Software"
 	echo "Foundation, Inc."
 	echo "License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>"

src/niceload

@@ -26,7 +26,7 @@
 use strict;
 use Getopt::Long;
 $Global::progname="niceload";
-$Global::version = 20210322;
+$Global::version = 20210323;
 Getopt::Long::Configure("bundling","require_order");
 get_options_from_array(\@ARGV) || die_usage();
 if($opt::version) {

src/parallel

@@ -969,6 +969,7 @@ sub spreadstdin() {
     my $header = find_header(\$buf,$in);
     my $anything_written;
     my $eof;
+    my $garbage_read;
 
     sub read_block() {
 	# Read a --blocksize from STDIN
@@ -1023,23 +1024,37 @@ sub spreadstdin() {
 	# Pass records of N regexps
 	# -N => (start..*?end){n}
 	# -L -N => (start..*?end){n*l}
-	my $read_n_lines = -1+
+	if(not $garbage_read) {
+	    $garbage_read = 1;
+	    if($buf !~ /^$recstart/o) {
+		# Buf does not start with $recstart => There is garbage.
+		# Make a single record of the garbage
+		if($buf =~
+		   /(?s)^(?-s)(
+		   (?:(?:(?!$recend$recstart)(?s).(?-s))*?$recend)
+		   )
+		   # Followed by recstart
+		   (?=$recstart)/mox and length $1 > 0) {
+		    $anything_written +=
+			write_record_to_pipe($chunk_number++,\$header,\$buf,
+					     $recstart,$recend,length $1);
+		    shorten(\$buf,length $1);
+		}
+	    }
+	}
+
+	my $n_records =
 	    $Global::max_number_of_args * ($Global::max_lines || 1);
 	# (?!negative lookahead) is needed to avoid backtracking
 	# See: https://unix.stackexchange.com/questions/439356/
+	# (?s).(?-s) = (.|[\n]) but faster
 	while($buf =~
-	      /(
+	      /(?s)^(?-s)(
-	      # Either recstart or at least one char from start
+	      # n more times recstart.*recend
-	      ^(?: $recstart | .)
+	      (?:$recstart(?:(?!$recend$recstart)(?s)(.)(?-s))*?$recend){$n_records}
-	      # followed something
-	      (?:(?!$recend$recstart).)*?
-	      # and then recend
-	      $recend
-	      # Then n-1 times recstart.*recend
-	      (?:$recstart(?:(?!$recend$recstart).)*?$recend){$read_n_lines}
 	      )
 	      # Followed by recstart
-	      (?=$recstart)/osx) {
+	      (?=$recstart)/mox and length $1 > 0) {
 	    $anything_written +=
 		write_record_to_pipe($chunk_number++,\$header,\$buf,
 				     $recstart,$recend,length $1);
@@ -1050,7 +1065,8 @@ sub spreadstdin() {
     sub pass_regexp() {
 	# Find the last recend-recstart in $buf
 	$eof and return;
-	if($buf =~ /^(.*$recend)$recstart.*?$/os) {
+	# (?s).(?-s) = (.|[\n]) but faster
+	if($buf =~ /^((?s).(?-s)*$recend)$recstart(?s).(?-s)*?$/mox) {
 	    $anything_written +=
 		write_record_to_pipe($chunk_number++,\$header,\$buf,
 				     $recstart,$recend,length $1);
@@ -1230,13 +1246,13 @@ sub recstartrecend() {
 	$recend = $opt::recend;
 	if($opt::regexp and $recend eq '') {
 	    # --regexp --recend ''
-	    $recend = '.';
+	    $recend = '(?s).(?-s)';
 	}
     }
 
     if($opt::regexp) {
 	# If $recstart/$recend contains '|'
-	# this should only apply to the regexp
+	# the | should only apply to the regexp
 	$recstart = "(?:".$recstart.")";
 	$recend = "(?:".$recend.")";
 	# Quote # and space
@@ -2173,7 +2189,7 @@ sub check_invalid_option_combinations() {
 
 sub init_globals() {
     # Defaults:
-    $Global::version = 20210322;
+    $Global::version = 20210323;
     $Global::progname = 'parallel';
     $::name = "GNU Parallel";
     $Global::infinity = 2**31;
@@ -8675,11 +8691,11 @@ sub remove_rec_sep($) {
     my ($block_ref,$recstart,$recend) = @_;
     # Remove record separator
     if($opt::regexp) {
-	$$block_ref =~ s/$recend$recstart//gos;
+	$$block_ref =~ s/$recend$recstart//gom;
 	$$block_ref =~ s/^$recstart//os;
 	$$block_ref =~ s/$recend$//os;
     } else {
-	$$block_ref =~ s/\Q$recend$recstart\E//gos;
+	$$block_ref =~ s/\Q$recend$recstart\E//gom;
 	$$block_ref =~ s/^\Q$recstart\E//os;
 	$$block_ref =~ s/\Q$recend\E$//os;
     }

src/parallel.pod

@@ -303,7 +303,7 @@ directory (if any) and extension removed.
 To understand positional replacement strings see B<{>I<n>B<}>.
 
 
-=item B<{=>I<perl expression>B<=}> (beta testing)
+=item B<{=>I<perl expression>B<=}>
 
 Replace with calculated I<perl expression>. B<$_> will contain the
 same as B<{}>. After evaluating I<perl expression> B<$_> will be used
@@ -873,7 +873,7 @@ Implies B<--pipe> unless B<--pipepart> is used.
 See also: B<--cat>.
 
 
-=item B<--filter> I<filter> (beta testing)
+=item B<--filter> I<filter>
 
 Only run jobs where I<filter> is true. I<filter> can contain
 replacement strings and Perl code. Example:
@@ -1373,9 +1373,9 @@ mix. Compare:
 See also: B<--group> B<--ungroup>
 
 
-=item B<--xapply> (beta testing)
+=item B<--xapply>
 
-=item B<--link> (beta testing)
+=item B<--link>
 
 Link input sources. Read multiple input sources like B<xapply>. If
 multiple input sources are given, one argument will be read from each
@@ -2638,9 +2638,9 @@ Silent.  The job to be run will not be printed. This is the default.
 Can be reversed with B<-v>.
 
 
-=item B<--template> I<file>=I<repl> (beta testing)
+=item B<--template> I<file>=I<repl>
 
-=item B<--tmpl> I<file>=I<repl> (beta testing)
+=item B<--tmpl> I<file>=I<repl>
 
 Copy I<file> to I<repl>. All replacement strings in the contents of
 I<file> will be replaced. All replacement strings in the name I<repl>

src/parsort

@@ -121,7 +121,7 @@ GetOptions(
     "help" => \$opt::dummy,
     ) || exit(255);
 $Global::progname = ($0 =~ m:(^|/)([^/]+)$:)[1];
-$Global::version = 20210322;
+$Global::version = 20210323;
 if($opt::version) { version(); exit 0; }
 @Global::sortoptions =
     shell_quote(@ARGV_before[0..($#ARGV_before-$#ARGV-1)]);

src/sql

@@ -600,7 +600,7 @@ $Global::Initfile && unlink $Global::Initfile;
 exit ($err);
 
 sub parse_options {
-    $Global::version = 20210322;
+    $Global::version = 20210323;
     $Global::progname = 'sql';
 
     # This must be done first as this may exec myself

testsuite/tests-to-run/parallel-local-0.3s.sh

@@ -16,6 +16,18 @@ export -f stdsort
 # Test amount of parallelization
 # parallel --shuf --jl /tmp/myjl -j1 'export JOBS={1};'bash tests-to-run/parallel-local-0.3s.sh ::: {1..16} ::: {1..5}
 
+par_env_parallel_pipefail() {
+    cat <<'EOF' | bash
+    echo "### test env_parallel with pipefail + inherit_errexit"
+    . $(which env_parallel.bash)
+    env_parallel --session
+    set -Eeuo pipefail
+    shopt -s inherit_errexit
+
+    env_parallel echo ::: OK
+EOF
+}
+
 par_crnl() {
     echo '### Give a warning if input is DOS-ascii'
     printf "b\r\nc\r\nd\r\ne\r\nf\r\n" | stdout parallel -k echo {}a

testsuite/tests-to-run/parallel-local-1s.sh

@@ -887,7 +887,7 @@ par_test_cpu_detection_lscpu() {
     }
     export -f test_one
     compgen -A function | grep ^cpu | sort | parallel -j0 -k test_one
-    rm ~/.parallel/tmp/sshlogin/*/cpuspec
+    rm ~/.parallel/tmp/sshlogin/*/cpuspec 2>/dev/null
 }
 
 par_null_resume() {

testsuite/tests-to-run/parallel-local-3s.sh

@@ -8,6 +8,34 @@
 # Each should be taking 3-10s and be possible to run in parallel
 # I.e.: No race conditions, no logins
 
+par_pipe_regexp() {
+    echo '### --pipe --regexp'
+    gen() {
+	cat <<EOF
+A2, Start, 5
+A2, 00100, 5
+A2, 00200, 6
+A2, 00300, 6
+A2, Start, 7
+A2, 00100, 7
+A2, Start, 7
+A2, 00200, 8
+EOF
+	true
+    }
+    p="parallel --pipe --regexp -k"
+    gen | $p --recstart 'A\d+, Start' -N1 'echo Record;cat'
+    gen | $p --recstart '[A-Z]\d+, Start' -N1 'echo Record;cat'
+    gen | $p --recstart '.*, Start' -N1 'echo Record;cat'
+    echo '### Prepend first record with garbage'
+    (echo Garbage; gen) |
+	$p --recstart 'A\d+, Start' -N1 'echo Record;cat'
+    (echo Garbage; gen) |
+	$p --recstart '[A-Z]\d+, Start' -N1 'echo Record;cat'
+    (echo Garbage; gen) |
+	$p --recstart '.*, Start' -N1 'echo Record;cat'
+}
+
 par_delay_halt_soon() {
     echo "bug #59893: --halt soon doesn't work with --delay"
     seq 0 10 |

testsuite/wanted-results/parallel-local-0.3s

@@ -173,6 +173,8 @@ par_empty_line	a
 par_empty_line	b
 par_empty_string_quote	bug #37694: Empty string argument skipped when using --quote
 par_empty_string_quote	3
+par_env_parallel_pipefail	### test env_parallel with pipefail + inherit_errexit
+par_env_parallel_pipefail	OK
 par_exit_val	### Test bug #45619: "--halt" erroneous error exit code (should give 0)
 par_exit_val	0
 par_exit_val	### Test exit val - true
@@ -898,7 +900,8 @@ par_sem_quote	echo
 par_sem_quote	
 par_slow_pipe_regexp	### bug #53718: --pipe --regexp -N blocks
 par_slow_pipe_regexp	This should take a few ms, but took more than 2 hours
-par_slow_pipe_regexp	    980     981    5881
+par_slow_pipe_regexp	      0       1       1
+par_slow_pipe_regexp	    980     981    5880
 par_slow_pipe_regexp	  25021   25021  150125
 par_slow_pipe_regexp	### These should give same output
 par_slow_pipe_regexp	6e72d7f86f6a423b9a7fa97630587815  -

testsuite/wanted-results/parallel-local-3s

@@ -208,6 +208,80 @@ par_multiline_commands	echo finish 4
 par_multiline_commands	parallel: Warning: Command lines contain newline. Forcing --null.
 par_multiline_commands	4
 par_multiline_commands	finish 4
+par_pipe_regexp	### --pipe --regexp
+par_pipe_regexp	Record
+par_pipe_regexp	A2, Start, 5
+par_pipe_regexp	A2, 00100, 5
+par_pipe_regexp	A2, 00200, 6
+par_pipe_regexp	A2, 00300, 6
+par_pipe_regexp	Record
+par_pipe_regexp	A2, Start, 7
+par_pipe_regexp	A2, 00100, 7
+par_pipe_regexp	Record
+par_pipe_regexp	A2, Start, 7
+par_pipe_regexp	A2, 00200, 8
+par_pipe_regexp	Record
+par_pipe_regexp	A2, Start, 5
+par_pipe_regexp	A2, 00100, 5
+par_pipe_regexp	A2, 00200, 6
+par_pipe_regexp	A2, 00300, 6
+par_pipe_regexp	Record
+par_pipe_regexp	A2, Start, 7
+par_pipe_regexp	A2, 00100, 7
+par_pipe_regexp	Record
+par_pipe_regexp	A2, Start, 7
+par_pipe_regexp	A2, 00200, 8
+par_pipe_regexp	Record
+par_pipe_regexp	A2, Start, 5
+par_pipe_regexp	A2, 00100, 5
+par_pipe_regexp	A2, 00200, 6
+par_pipe_regexp	A2, 00300, 6
+par_pipe_regexp	Record
+par_pipe_regexp	A2, Start, 7
+par_pipe_regexp	A2, 00100, 7
+par_pipe_regexp	Record
+par_pipe_regexp	A2, Start, 7
+par_pipe_regexp	A2, 00200, 8
+par_pipe_regexp	### Prepend first record with garbage
+par_pipe_regexp	Record
+par_pipe_regexp	Garbage
+par_pipe_regexp	Record
+par_pipe_regexp	A2, Start, 5
+par_pipe_regexp	A2, 00100, 5
+par_pipe_regexp	A2, 00200, 6
+par_pipe_regexp	A2, 00300, 6
+par_pipe_regexp	Record
+par_pipe_regexp	A2, Start, 7
+par_pipe_regexp	A2, 00100, 7
+par_pipe_regexp	Record
+par_pipe_regexp	A2, Start, 7
+par_pipe_regexp	A2, 00200, 8
+par_pipe_regexp	Record
+par_pipe_regexp	Garbage
+par_pipe_regexp	Record
+par_pipe_regexp	A2, Start, 5
+par_pipe_regexp	A2, 00100, 5
+par_pipe_regexp	A2, 00200, 6
+par_pipe_regexp	A2, 00300, 6
+par_pipe_regexp	Record
+par_pipe_regexp	A2, Start, 7
+par_pipe_regexp	A2, 00100, 7
+par_pipe_regexp	Record
+par_pipe_regexp	A2, Start, 7
+par_pipe_regexp	A2, 00200, 8
+par_pipe_regexp	Record
+par_pipe_regexp	Garbage
+par_pipe_regexp	Record
+par_pipe_regexp	A2, Start, 5
+par_pipe_regexp	A2, 00100, 5
+par_pipe_regexp	A2, 00200, 6
+par_pipe_regexp	A2, 00300, 6
+par_pipe_regexp	Record
+par_pipe_regexp	A2, Start, 7
+par_pipe_regexp	A2, 00100, 7
+par_pipe_regexp	Record
+par_pipe_regexp	A2, Start, 7
+par_pipe_regexp	A2, 00200, 8
 par_progress	### Test of --progress
 par_progress	16
 par_progress	### Test of --progress with no jobs