no_comment

1 files changed, 11 insertions, 1 deletions

diff --git a/perl-install/common.pm b/perl-install/common.pm
index cbbc79ff2..1ad2f85b1 100644
--- a/perl-install/common.pm
+++ b/perl-install/common.pm
@@ -7,7 +7,7 @@ use vars qw(@ISA %EXPORT_TAGS @EXPORT_OK $printable_chars $sizeof_int $bitof_int
 @ISA = qw(Exporter);
 %EXPORT_TAGS = (
     common     => [ qw(__ even odd arch better_arch compat_arch min max sqr sum and_ or_ sign product bool invbool listlength bool2text bool2yesno text2bool to_int to_float ikeys member divide is_empty_array_ref is_empty_hash_ref add2hash add2hash_ set_new set_add round round_up round_down first second top uniq translate untranslate warp_text formatAlaTeX formatLines deref) ],
-    functional => [ qw(fold_left compose map_index grep_index map_each grep_each list2kv map_tab_hash mapn mapn_ difference2 before_leaving catch_cdie cdie combine) ],
+    functional => [ qw(fold_left compose mapgrep map_index grep_index map_each grep_each list2kv map_tab_hash mapn mapn_ difference2 before_leaving catch_cdie cdie combine) ],
     file       => [ qw(dirname basename touch all glob_ cat_ output symlinkf chop_ mode typeFromMagic expand_symlinks) ],
     system     => [ qw(sync makedev unmakedev psizeof strcpy gettimeofday syscall_ salt getVarsFromSh setVarsInSh setVarsInCsh substInFile availableRam availableMemory removeXiBSuffix template2file formatTime unix2dos setVirtual) ],
     constant   => [ qw($printable_chars $sizeof_int $bitof_int $SECTORSIZE %compat_arch) ],
@@ -156,6 +156,16 @@ sub touch {
     utime $now, $now, $f;
 }
 
+sub mapgrep(&@) {
+    my $f = shift;
+    my @l;
+    foreach (@_) {
+	my ($b, $v) = $f->($_);
+	push @l, $v if $b;
+    }
+    @l;
+}
+
 sub map_index(&@) {
     my $f = shift;
     my @v; local $::i = 0;