X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2Fabbrev.pl;h=c505a6f28bd7bb79152fd90fc57fd0e6cbf83f0c;hb=29c2e10b646568439f261863b569e814d4538b73;hp=c233d4af7e63adc4e2ac9e07314ce8ba74fb5a96;hpb=449aadcac0f13893f2b716ea169bf74293ee9c41;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/lib/abbrev.pl b/lib/abbrev.pl
index c233d4a..c505a6f 100644
--- a/lib/abbrev.pl
+++ b/lib/abbrev.pl
@@ -4,6 +4,16 @@
 ;#	...
 ;#	$long = $foo{$short};
 
+#
+# This library is no longer being maintained, and is included for backward
+# compatibility with Perl 4 programs which may require it.
+#
+# In particular, this should not be used as an example of modern Perl
+# programming techniques.
+#
+# Suggested alternative: Text::Abbrev
+#
+
 package abbrev;
 
 sub main'abbrev {
@@ -17,7 +27,7 @@ sub main'abbrev {
 	$len = 1;
 	foreach $cmp (@cmp) {
 	    next if $cmp eq $name;
-	    while (substr($cmp,0,$len) eq $abbrev) {
+	    while (@extra && substr($cmp,0,$len) eq $abbrev) {
 		$abbrev .= shift(@extra);
 		++$len;
 	    }