tigefa4u projects Trac

So far, only the interactive mode of trac-admin correctly handled non-ascii input.
When parameteres are given to `trac-admin` on the command line, it is not correct to use `sys.stdin.encoding`, as `sys.argv` strings are encoded using the locale encoding (`local.getpreferredencoding()`).

Related to #6677.

More precise permissions (rw) set on created files. Related to #6604.

Patch by Remy Blank.

TracStandalone: umask value is now set to a sensible `022` default.

This can also be configured using the `--umask` option for `tracd`.

Closes #6604.

Patch contributed by Remy Blank.

Improved display of attachment search matches.

Contributed by Remy Blank, finalizes #2561.

Show an explicit "empty file" message when the previewed file is empty.

Also, the Pygments renderer transformed that empty file into a one byte '\n' file.

Closes #7281.

TracMercurial for 0.10: backported support for generalized diffs (`MercurialRepository.get_changes`, as in r6053), contributed by edgimar on #6676.

TracMercurial for 0.11: backported r7353

TracMercurial: compatibility fixes with recent Hg versions (post 1.0.1).

- in hg:6749:c68f84448012 repo changelog.count was replaced with len(repo)
- in hg:6750:fb42030d79d6 manifest.execf was removed

Thanks to Pranav Tekchand for the heads up!

Don't produce <span> for author when there's no author information in search results.

Patch by Remy Blank, on #7444.

Milestone are now searchable.

Patch by Remy Blank, closes #7444.