skip test if db doesn't have null key support

[p5sagit/p5-mst-13.2.git] / lib / Term / Complete.pm

diff --git a/lib/Term/Complete.pm b/lib/Term/Complete.pm
index 97c71fe..445dfca 100644 (file)
--- a/lib/Term/Complete.pm
+++ b/lib/Term/Complete.pm
@@ -5,30 +5,64 @@ require Exporter;
 @ISA = qw(Exporter);
 @EXPORT = qw(Complete);
 
-#
-#      @(#)complete.pl,v1.1            (me@anywhere.EBay.Sun.COM) 09/23/91
-#
-# Author: Wayne Thompson
-#
-# Description:
-#     This routine provides word completion.
-#     (TAB) attempts word completion.
-#     (^D)  prints completion list.
-#      (These may be changed by setting $Complete::complete, etc.)
-#
-# Diagnostics:
-#     Bell when word completion fails.
-#
-# Dependencies:
-#     The tty driver is put into raw mode.
-#
-# Bugs:
-#
-# Usage:
-#     $input = complete('prompt_string', \@completion_list);
-#         or
-#     $input = complete('prompt_string', @completion_list);
-#
+#      @(#)complete.pl,v1.2            (me@anywhere.EBay.Sun.COM) 09/23/91
+
+=head1 NAME
+
+Term::Complete - Perl word completion module
+
+=head1 SYNOPSIS
+
+    $input = Complete('prompt_string', \@completion_list);
+    $input = Complete('prompt_string', @completion_list);
+
+=head1 DESCRIPTION
+
+This routine provides word completion on the list of words in
+the array (or array ref).
+
+The tty driver is put into raw mode using the system command
+C<stty raw -echo> and restored using C<stty -raw echo>.
+
+The following command characters are defined:
+
+=over 4
+
+=item E<lt>tabE<gt>
+
+Attempts word completion.
+Cannot be changed.
+
+=item ^D
+
+Prints completion list.
+Defined by I<$Term::Complete::complete>.
+
+=item ^U
+
+Erases the current input.
+Defined by I<$Term::Complete::kill>.
+
+=item E<lt>delE<gt>, E<lt>bsE<gt>
+
+Erases one character.
+Defined by I<$Term::Complete::erase1> and I<$Term::Complete::erase2>.
+
+=back
+
+=head1 DIAGNOSTICS
+
+Bell sounds when word completion fails.
+
+=head1 BUGS
+
+The completion character E<lt>tabE<gt> cannot be changed.
+
+=head1 AUTHOR
+
+Wayne Thompson
+
+=cut
 
 CONFIG: {
     $complete = "\004";
@@ -38,6 +72,12 @@ CONFIG: {
 }
 
 sub Complete {
+    my($prompt, @cmp_list, $cmp, $test, $l, @match);
+    my ($return, $r) = ("", 0);
+
+    $return = "";
+    $r      = 0;
+
     $prompt = shift;
     if (ref $_[0] || $_[0] =~ /^\*/) {
        @cmp_lst = sort @{$_[0]};
@@ -54,17 +94,17 @@ sub Complete {
                 # (TAB) attempt completion
                 $_ eq "\t" && do {
                     @match = grep(/^$return/, @cmp_lst);
-                    $l = length($test = shift(@match));
                     unless ($#match < 0) {
+                        $l = length($test = shift(@match));
                         foreach $cmp (@match) {
                             until (substr($cmp, 0, $l) eq substr($test, 0, $l)) {
                                 $l--;
                             }
                         }
                         print("\a");
+                        print($test = substr($test, $r, $l - $r));
+                        $r = length($return .= $test);
                     }
-                    print($test = substr($test, $r, $l - $r));
-                    $r = length($return .= $test);
                     last CASE;
                 };
 
@@ -77,7 +117,8 @@ sub Complete {
                 # (^U) kill
                 $_ eq $kill && do {
                     if ($r) {
-                        undef($r, $return);
+                        $r     = 0;
+                       $return = "";
                         print("\r\n");
                         redo LOOP;
                     }