[gtk-doc] gtkdoc-mkdb: fix docs for --ignore-files

[Stefan Kost <stefkost src gnome org>]

commit 3e738e1640f8bcc38b662dd5a6352e6f832e02ac
Author: Stefan Sauer <ensonic users sf net>
Date:   Mon Dec 29 11:58:20 2014 +0100

    gtkdoc-mkdb: fix docs for --ignore-files
    
    This option can only be given once (args template does not take an array ref).
    The arg can contain multiple files/dirs though. Add more logging to make it
    easier to debug it.

 gtkdoc-mkdb.in |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/gtkdoc-mkdb.in b/gtkdoc-mkdb.in
index de0d35d..74b87b2 100755
--- a/gtkdoc-mkdb.in
+++ b/gtkdoc-mkdb.in
@@ -101,7 +101,6 @@ gtkdoc-mkdb version @VERSION@ - generate docbook files
 --source-dir=DIRNAME       Directories which contain inline reference material
 --source-suffixes=SUFFIXES Suffixes of source files to scan, comma-separated
 --ignore-files=FILES       Files or directories which should not be scanned
-                           May be used more than once for multiple directories
 --output-dir=DIRNAME       Directory to put the generated DocBook files in
 --tmpl-dir=DIRNAME         Directory in which template files may be found
 --main-sgml-file=FILE      File containing the toplevel DocBook file.
@@ -118,6 +117,8 @@ EOF
     exit 0;
 }
 
+ TRACE@(" ignore files: [$IGNORE_FILES]\n");
+
 my ($empty_element_end, $doctype_header);
 
 # autodetect output format
@@ -3823,6 +3824,8 @@ sub ReadSourceDocumentation {
         if ($source_dir =~ m%^\Q$dir\E/(.*)$% and $IGNORE_FILES =~ m/(\s|^)\Q$1\E(\s|$)/) {
             @TRACE@("Skipping source directory: $source_dir");
             return;
+        } else {
+            @TRACE@("No match for: $1");
         }
     }