hgweb.cgi

templates/filters: strip quotes from {author|person}

RFC5322 (Internet Message Format) [0] says that the 'display name' of
an internet address [1] (what Mercurial calls 'person') can be quoted
with DQUOTE (ASCII 34: ") if it contains non-atom characters [2].
For example, dot '.' is a non-atom character. Also, DQUOTEs in a
quoted string will be escaped using "\" [2][3].

The current {author|person} template+filter just extracts the part
before an email address as-is. This can look ugly, especially on the
web interface, or when generating output for post-processing...

Moreover, as an example, the Mercurial repository has a bunch of
incoherent uses of DQUOTES in author names. As per Matt's digging:

  $ hg log --template "{author|person}\n" | grep '"' | sort | uniq
  "Andrei Vermel
  "Aurelien Jacobs
  "Daniel Santa Cruz
  "Hidetaka Iwai
  "Hiroshi Funai"
  "Mathieu Clabaut
  "Paul Moore
  "Peter Arrenbrecht"
  "Rafael Villar Burke
  "Shun-ichi GOTO"
  "Wallace, Eric S"
  "Yann E. MORIN"
  Josef "Jeff" Sipek
  Radoslaw "AstralStorm" Szkodzinski

Fix the 'person' filter to remove leading and trailing DQUOTES,
and unescape remaining DQUOTES.

Given this author: "J. \"random\" DOE" <[e-mail]>
  before:   {author|person} : "J. \"random\" DOE"
  after:    {author|person} : J. "random" DOE

For the Mercurial repository, that leaves us with two authors with
DQUOTES, in acceptable positions:

  $ hg log --template "{author|person}\n" | grep '"' | sort | uniq
  Josef "Jeff" Sipek
  Radoslaw "AstralStorm" Szkodzinski

[0] https://tools.ietf.org/html/rfc5322
[1] https://tools.ietf.org/html/rfc5322#section-3.4
[2] https://tools.ietf.org/html/rfc5322#section-3.2.4
[3] https://tools.ietf.org/html/rfc5322#section-3.2.1

Signed-off-by: "Yann E. MORIN" <[e-mail]>

#!/usr/bin/env python
#
# An example hgweb CGI script, edit as necessary
# See also http://mercurial.selenic.com/wiki/PublishingRepositories

# Path to repo or hgweb config to serve (see 'hg help hgweb')
config = "/path/to/repo/or/config"

# Uncomment and adjust if Mercurial is not installed system-wide
# (consult "installed modules" path from 'hg debuginstall'):
#import sys; sys.path.insert(0, "/path/to/python/lib")

# Uncomment to send python tracebacks to the browser if an error occurs:
#import cgitb; cgitb.enable()

from mercurial import demandimport; demandimport.enable()
from mercurial.hgweb import hgweb, wsgicgi
application = hgweb(config)
wsgicgi.launch(application)