Upgrade to MakeMaker 6.17.

[perl5.git] / lib / abbrev.pl

diff --git a/lib/abbrev.pl b/lib/abbrev.pl
index c233d4a..c505a6f 100644 (file)
--- 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;
            }