Edgewall Software

Opened 14 years ago

Closed 14 years ago

Last modified 14 years ago

#7324 closed defect (fixed)

Firefox crashes when performing large quick search

Reported by: fermulator Owned by: Remy Blank
Priority: normal Milestone: 0.11.3
Component: search system Version: 0.11b1
Severity: normal Keywords:
Cc: fermulator@… Branch:
Release Notes:
API Changes:
Internal Changes:


Steps to reproduce issue:

  1. Using Firefox…
  2. Open a trac website.
  3. Provided we have a ticket (semi-large) with several comments (20+).
  4. Copy into the clipboard a sentence (15+ words) from a comment in said ticket.
  5. In the quick search of trac, paste that large sentence and perform the search. … the results will be displayed … probably only the ONE result of that ticket since the sentence would probably be unique.
  6. Click on the link to the ticket.

trac will cause firefox to use A LOT of CPU, and the ticket could take upwards of 2+ minutes to load. Yikes!

Sometimes even firefox will crash entirely …

We suspect this has to do with syntax highlighting javascript from trac itself.


  1. Do a quicksearch for the TICKET NUMBER (i.e. #999)
  2. trac will automatically load the ticket, and it will be fast!

In the comparison case the only difference I can see is that there wouldn't be syntax highlighting … ?

Attachments (1)

search-limit.diff (630 bytes ) - added by Alec Thomas 14 years ago.
Limit number of highlighted words on search

Download all attachments as: .zip

Change History (7)

by Alec Thomas, 14 years ago

Attachment: search-limit.diff added

Limit number of highlighted words on search

comment:1 by Alec Thomas, 14 years ago

Give this patch a try.

comment:2 by anonymous, 14 years ago

What version of Firefox? I can't reproduce this in

comment:3 by Remy Blank, 14 years ago

Milestone: 0.11.3
Owner: changed from Christian Boos to Remy Blank

I can reproduce this issue in Firefox, for example using #31 and following the procedure provided in the ticket description. The browser never crashes, but I get the message box about "a script taking too long" several times before the page displays.

Limiting the number of highlights sounds like a good idea.

comment:4 by Remy Blank, 14 years ago

Resolution: fixed
Status: newclosed

Fixed in [7695] by limiting highlighting to 10 terms, but also requiring terms to be at least 3 characters.

comment:5 by anonymous, 14 years ago

Owner: changed from Remy Blank to anonymous

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comment:6 by Remy Blank, 14 years ago

Owner: changed from anonymous to Remy Blank

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