gitweb: Fix links to lines in blobs when javascript-actions are enabled

The fixLinks() function adds 'js=1' to each link that does not already
have 'js' query parameter specified. This is used to signal to gitweb
that the browser can actually do javascript when these links are used.

There are two problems with the existing code:

  1. URIs with fragment and 'js' query parameter, like e.g.

        ...foo?js=0#l199

     were not recognized as having 'js' query parameter already.

  2. The 'js' query parameter, in the form of either '?js=1' or ';js=1'
     was appended at the end of URI, even if it included a fragment
     (had a hash part).  This lead to the incorrect links like this

        ...foo#l199?js=1

     instead of adding query parameter as last part of query, but
     before the fragment part, i.e.

        ...foo?js=1#l199

Signed-off-by: Peter Stuge <redacted>
Acked-by: Jakub Narebski <redacted>
Signed-off-by: Junio C Hamano <redacted>

diff --git a/static/js/javascript-detection.js b/static/js/javascript-detection.js
index a06815a29eb971adf56f71ce14d2ec0348c9c74fb7ba656e1a876331db5f80ad..228b25b2047638aa299ae452cd4787c08fb5a195d2cc6705b6dacdce88bbf3af 100644 (file)
--- a/static/js/javascript-detection.js
+++ b/static/js/javascript-detection.js
@@ -16,7 +16,7 @@
  * and other reasons to not add 'js=1' param at the end of link
  * @constant
  */
-var jsExceptionsRe = /[;?]js=[01]$/;
+var jsExceptionsRe = /[;?]js=[01](#.*)?$/;
 
 /**
  * Add '?js=1' or ';js=1' to the end of every link in the document
@@ -33,9 +33,9 @@ function fixLinks() {
        var allLinks = document.getElementsByTagName("a") || document.links;
        for (var i = 0, len = allLinks.length; i < len; i++) {
                var link = allLinks[i];
-               if (!jsExceptionsRe.test(link)) { // =~ /[;?]js=[01]$/;
-                       link.href +=
-                               (link.href.indexOf('?') === -1 ? '?' : ';') + 'js=1';
+               if (!jsExceptionsRe.test(link)) {
+                       link.href = link.href.replace(/(#|$)/,
+                               (link.href.indexOf('?') === -1 ? '?' : ';') + 'js=1$1');
                }
        }
 }