Invalid input syntax for ticket links exposed as internal error

[Eric Friedman <ebf@…>]

I was creating a new ticket. It referenced another ticket using the ticket:nnn syntax. Specifically, I had intended to write ticket:645. However, I accidentally typed ticket:645/. When I clicked to submit the ticket, it produced an internal error page.

Worse, when I clicked the back button on my browser my new ticket, I lost the information for the new ticket I was creating.

Here is the traceback:

Traceback (most recent call last):
 File "/usr/lib64/python2.4/site-packages/trac/web/fcgi_frontend.py",
line 40, in _handler
   dispatch_request(req.path_info, req, env)
 File "/usr/lib64/python2.4/site-packages/trac/web/main.py", line
139, in dispatch_request
   dispatcher.dispatch(req)
 File "/usr/lib64/python2.4/site-packages/trac/web/main.py", line
107, in dispatch
   resp = chosen_handler.process_request(req)
 File "/usr/lib64/python2.4/site-packages/trac/ticket/web_ui.py",
line 90, in process_request
   description = wiki_to_html(ticket['description'], self.env, req, db)
 File "/usr/lib64/python2.4/site-packages/trac/wiki/formatter.py",
line 744, in wiki_to_html
   Formatter(env, req, absurls, db).format(wikitext, out, escape_newlines)
 File "/usr/lib64/python2.4/site-packages/trac/wiki/formatter.py",
line 599, in format
   result = re.sub(self.rules, self.replace, line)
 File "/usr/lib64/python2.4/sre.py", line 142, in sub
   return _compile(pattern, 0).sub(repl, string, count)
 File "/usr/lib64/python2.4/site-packages/trac/wiki/formatter.py",
line 221, in replace
   return getattr(self, '_' + itype + '_formatter')(match, fullmatch)
 File "/usr/lib64/python2.4/site-packages/trac/wiki/formatter.py",
line 271, in _shref_formatter
   return self._make_link(ns, target, match, match)
 File "/usr/lib64/python2.4/site-packages/trac/wiki/formatter.py",
line 295, in _make_link
   util.escape(label, False))
 File "/usr/lib64/python2.4/site-packages/trac/ticket/api.py", line
149, in _format_link
   (target,))
ProgrammingError: ERROR:  invalid input syntax for integer: "645/"

SELECT summary,status FROM ticket WHERE id='645/'

[Christian Boos]

Well, with 0.10 it works ticket:645/

Duplicate of #3011 (the "first" part, not the reopened one…)