add _checklink var to dirstate
introduce dirstate.flagfunc
switch users of util.execfunc/linkfunc to flagfunc
change manifestdict.set to take a flags string
change ctx.fileflags to ctx.flags
change gitmode func to a dict
remove util.execfunc/linkfunc
The self patching of files when diffed with a backup is a bit peculiar to me.
It makes sense in mpatch, that's less clear in mercurial patching code. Let's
document and preserve it for now.
Like some renames or copy operations, binary file removal does not generate any
"file" or "hunk" action, but was not tagged as such and let iterhunk() assume
no hunk was applied for the deleted file.
Sometimes, revisions cannot be represented by a regular diff, only a git diff
would capture binary files or permission changes. diffstat cannot handle git
patches and will output "0 files changed" when fed with an empty diff. We
cannot consider the latter to be an error, unless we rewrite diffstat to handle
these correctly.
Reported and explained by Peter Arrenbrecht <peter.arrenbrecht@gmail.com>.
Following file additions were skipped but empty files were still created. This situation could lead to qrefresh losing patch information.
'hg import' fails under Python 2.3. The name of the compare function parameter in the call to list.sort() is 'cmpfunc' in Python 2.3 and
'cmp' in Python 2.4+. Passing the compare function as a named parameter is therefore problematic.
If the file is writable by the user, but owned by a different user, the
chmod will otherwise fail with "Operation not permitted".
Additionally make very sure that the file is only written if either the number
of links is <= 1 or the file was successfully removed.
Maybe this minimal COW code should be replaced by something from util.
This is now invoked by default only if ui.patch is set. Otherwise, we
use our built-in patch. If that fails because it can't find any valid
hunks, we'll fall back to trying the external patch command.
