added if__

1 files changed, 7 insertions, 2 deletions

diff --git a/perl-install/common.pm b/perl-install/common.pm
index 0968422bd..043c30de6 100644
--- a/perl-install/common.pm
+++ b/perl-install/common.pm
@@ -6,7 +6,7 @@ use vars qw(@ISA %EXPORT_TAGS @EXPORT_OK $printable_chars $sizeof_int $bitof_int
 
 @ISA = qw(Exporter);
 %EXPORT_TAGS = (
-    common     => [ qw(__ may_apply even odd arch better_arch compat_arch min max sqr sum and_ or_ if_ 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_ put_in_hash set_new set_add round round_up round_down first second top uniq translate untranslate warp_text formatAlaTeX formatLines deref next_val_in_array) ],
+    common     => [ qw(__ may_apply even odd arch better_arch compat_arch min max sqr sum and_ or_ if_ if__ 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_ put_in_hash set_new set_add round round_up round_down first second top uniq translate untranslate warp_text formatAlaTeX formatLines deref next_val_in_array) ],
     functional => [ qw(fold_left compose mapgrep map_index grep_index find_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_ cat__ output symlinkf chop_ mode typeFromMagic expand_symlinks) ],
     system     => [ qw(sync makedev unmakedev psizeof strcpy gettimeofday syscall_ salt getVarsFromSh setVarsInSh setVarsInShMode setVarsInCsh substInFile availableMemory availableRamMB removeXiBSuffix formatXiB template2file template2userfile update_userkderc list_skels formatTime formatTimeRaw unix2dos setVirtual isCdNotEjectable) ],
@@ -145,7 +145,12 @@ sub if_($@) {
     wantarray || @_ <= 1 or die "if_ called in scalar context with more than one argument";
     wantarray ? @_ : $_[0];
 }
-
+sub if__($@) {
+    my $b = shift;
+    defined $b or return ();
+    wantarray || @_ <= 1 or die "if_ called in scalar context with more than one argument";
+    wantarray ? @_ : $_[0];
+}
 sub arch() {
     require c;
     c::kernel_arch();