Avoid troublesome abs_path calls in wrapper setup

As documented in the forum post.

IkiWiki/Wrapper.pm

@@ -4,14 +4,14 @@ package IkiWiki;
 
 use warnings;
 use strict;
-use Cwd q{abs_path};
+use File::Spec;
 use Data::Dumper;
 use IkiWiki;
 
 sub gen_wrapper () { #{{{
-	$config{srcdir}=abs_path($config{srcdir});
-	$config{destdir}=abs_path($config{destdir});
-	my $this=abs_path($0);
+	$config{srcdir}=File::Spec->rel2abs($config{srcdir});
+	$config{destdir}=File::Spec->rel2abs($config{destdir});
+	my $this=File::Spec->rel2abs($0);
 	if (! -x $this) {
 		error(sprintf(gettext("%s doesn't seem to be executable"), $this));
 	}

debian/changelog

@@ -7,6 +7,7 @@ ikiwiki (2.55) UNRELEASED; urgency=low
     (Simon McVittie)
   * Really fix bug with links to pages with names containing colons. 
     Previous fix mised a few cases.
+  * Avoid troublesome abs_path calls in wrapper setup.
 
  -- Joey Hess <joeyh@debian.org>  Mon, 21 Jul 2008 11:35:46 -0400
 

doc/forum/Allow_overriding_of_symlink_restriction.mdwn

@@ -132,6 +132,4 @@ like this being accepted before I bothered.
 >> hrm.  I might see if <code> File::Spec->rel2abs( $path ) ; </code> will give absolute an path without expanding symlinks.
 >>> Patch using rel2abs() works well - it no longer expands symlinks.
 
-> I suppose you could do the same thing with `$this`, but it does not sound
-> like it has caused you problems anyway.
-> --[[Joey]]
+>>>> That patch is applied now. --[[Joey]]