largefiles: drop unnecessary setting of matcher._always In two very similar segments of code, an existing matcher is modified by changing its _files attribute through a map and a filter operation. Neither operation can cause an empty list to become non-empty, so a matcher that always matches can not stop always matching. Drop the setting of the attribute, so we don't unnecessarily prevent the fast paths to be taken where these matchers end up being used.

config: move mergetools configuration from contrib to default configuration The merge tool configuration is an essential part of a good initial user experience. 'make osx' installers and direct 'make' installation did not have merge tool configuration. Now they have. Note: The installer fixes for windows have been done blindly and might require additional changes.

config: introduce "built-in" default configuration settings in default.d This helps providing a more consistent user experience on all platforms and with all packaging. The exact location of default.d depends on how Mercurial is installed and whether it is 'frozen'. The exact location should never be relevant to users and is intentionally not explained in details in the documentation. It will however always be next to the help and templates files. Note that setting HGRCPATH also disables these defaults. I don't know if that should be considered a bug or a feature.

contrib: buildrpm checking of md5 checksums of downloaded Python and Docutils

contrib: update build defaults to latest Python and docutils versions Use Python 2.7.8 and Docutils 0.12 for Makefile.python and buildrpm (CentOS 5 rpms).

spelling: fixes from proofreading of spell checker issues

extdiff: quote user-supplied options passed to shell $ hg extdiff -p cmd -o "name <user@example.com>" resulted in a shell redirection error (due to the less-than sign), rather than passing the single option to cmd. This was due to options not being quoted for passing to the shell, via util.system(). Apply util.shellquote() to each of the user-specified options (-o) to the comparison program before they are concatenated and passed to util.system(). The requested external diff command (-p) and the files/directories being compared are already quoted correctly. The discussion at the time of changeset be98c5ce4022 correctly noted that this course of action breaks whitespace-separated options specified for external diff commands in the configuration. The lower part of the patch corrects this by lexing options read from the configuration file into separate options rather than reading them all into the first option. Update test to cover these conditions. Related changesets (reverse-chronological): - be98c5ce4022 (fix reverted to make configuration file options work) - 453097750fbf (issue fixed but without fix for configuration file)

serve: correct meta variable of --daemon-pipefds option It was changed to lock path at e22695b4472f.

tests: have dumbhttp.py use cmdutil.service() to wait for child to listen() Because the original dumbhttp.py exited without waiting for listen(), several tests could fail with "abort: error: Connection refused" if subsequent hg command is fast enough.

test-revert: remove obsolete comment about known misbehavior It seems like the last known misbehvior that the comment was referring to was dealt with in 2ff28e07d7d6 (revert: properly back up added files with local modification, 2014-08-31).