dirstate.walk: pull skipstep3 out of the explicit walk code This is a move towards factoring out this code into a separate function.

dirstate.walk: move dirignore filter out of explicit walk code This is a move towards factoring this code out into a separate function.

dirstate.walk: maintain a list of dirs not found Upcoming patches will factor out the walk over explicit files done in step 1. This helps us get there.

highlight: fix page layout with empty first and last lines Repeated newlines were stripped by pygmentize, now give the option not to do so.

check-code: add another Windows pathsep rule

merge with stable

tests: quiet strip to avoid commandserver pathsep issue

tests: fix another Windows path issue

tests: fix unionrepo path issue on msys (issue3927)

merge with stable

blackbox: fix literal block syntax

largefiles: check unknown files with case awareness of the filesystem Before this patch, largefiles extension checks unknown files in the working directory always case sensitively. This causes failure in updating from the revision X consisting of '.hglf/A' (and "A" implicitly) to the revision Y consisting of 'a' (not ".hglf/A") on case insensitive filesystem, because "A" in the working directory is treated as colliding against and different from 'a' on the revision Y. This patch uses "repo.dirstate.normalize()" to check unknown files with case awareness of the filesystem.

largefiles: check existence of the file with case awareness of the filesystem Before this patch, largefiles extension always unlinks largefiles untracked on the target context in merging/updating after updating working directory. For example, it is assumed that the revision X consists of ".hglf/A" (and "A" implicitly) and revision Y consists of "a" (not ".hglf/A"). In the case of updating from X to Y, largefiles extension tries to unlink "A" after updating "a" in working directory. This causes unexpected unlinking "a" on the case insensitive filesystem. This patch checks existence of the file in the working context with case awareness of the filesystem to prevent from such unexpected unlinking. "lfcommands._updatelfile()" also unlinks target file in the case "largefile is tracked in the target context, but fails to be fetched". This patch doesn't apply "repo.dirstate.normalize()" in this case, because it should be already ensured in the manifest merging that there is no normal file colliding against any largefiles.

windows: check target type before actual unlinking to follow POSIX semantics Creation and writing into target file via vfs (a.k.a opener) is done after "unlink()" target file, if it exists. For example, it is assumed that the revision X consists of file 'A', and the revision Y consists of file 'A/B'. Merging revision X into Y tries to "unlink()" on directory 'A' of 'A/B', before creation of file 'A'. On POSIX environment, directories should be removed by "rmdir(2)", and "unlink(2)" on directories fails. "unlink()" of Mercurial (and Python) uses "unlink(2)" directly, so unlinking in the merge case above would fail. In the other hand, on Windows environment, "unlink()" of Mercurial tries to rename before actual unlinking, to follow POSIX semantics: already opened file can be unlinked safely. This causes unexpected success in unlinking in the merge case above, even though directory 'A' is renamed to another. This confuses users. This patch checks whether target is directory or not before renaming, and raises IOError(errno.EPERM) if so, to follow POSIX semantics.

Merge with stable.

manifestmerge: local unknown, remote created: don't traverse symlinks To figure out what to do with locally unknown files, Mercurial attempts to read them if they exist. When an attempt is made to read a file that exists but traverses a symlink, Mercurial aborts. With this patch, we first ensure that the file doesn't traverse a symlink before opening it. This is fine because a file being "remote created" means the symlink doesn't exist remotely, which means it will be deleted in the apply phase.