view hgweb.cgi @ 16089:2e8f4b82c551 stable

mdiff: adjust hunk offsets with --ignore-blank-lines (issue3234)

When diffing the following documents with --ignore-blank-lines (-B):

  $ cat > a <<EOF
  >
  >
  >
  > b
  > x
  > d
  > EOF

and:

  $ cat > b <<EOF
  > b
  > y
  > d
  > EOF

the context lines are taken from the first document, even if the lines differ
(with -w or -b) or if the number of lines differ (with -B). In the second case,
we have to adjust the hunk new lines offsets or we end with inconsistent diffs
like (see the @@ offsets):

  diff -r 0e66aa54f318 a
  --- a/a
  +++ b/a
  @@ -1,4 +1,3 @@

   b
  -x
  +y
   d

Note that having different context lines in a and b means the diff can be
applied but is not invertible.

Reported by Nicholas Riley <[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)