X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2Fabbrev.pl;h=eac0053ce759b3b5c08cbea09246e7bf3ca964f3;hb=b41aadf259cf55858c5ab0386356cdbe2dc49a6b;hp=5859a7be48d8f0376fe231b94b8557c86d6d742c;hpb=a687059cbaf2c6fdccb5e0fae2aee80ec15625a8;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/lib/abbrev.pl b/lib/abbrev.pl
index 5859a7b..eac0053 100644
--- a/lib/abbrev.pl
+++ b/lib/abbrev.pl
@@ -4,19 +4,36 @@
 ;#	...
 ;#	$long = $foo{$short};
 
+#
+# This library is no longer being maintained, and is included for backward
+# compatibility with Perl 4 programs which may require it.
+# This legacy library is deprecated and will be removed in a future
+# release of perl.
+#
+# In particular, this should not be used as an example of modern Perl
+# programming techniques.
+#
+# Suggested alternative: Text::Abbrev
+#
+
 package abbrev;
 
+warn( "The 'abbrev.pl' legacy library is deprecated and will be"
+      . " removed in the next major release of perl. Please use the"
+      . " Text::Abbrev module instead." );
+
 sub main'abbrev {
     local(*domain) = @_;
     shift(@_);
     @cmp = @_;
+    local($[) = 0;
     foreach $name (@_) {
 	@extra = split(//,$name);
 	$abbrev = shift(@extra);
 	$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;
 	    }