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.
The prose section of the help text for the command already said that -u and -m
are accepted, but -u was not listed in the table of options, and did not work.
Useful when accepting patches from other people made by hg diff rather than hg
export. For completeness, also accepting -d DATE.
[CHANGES: rebased against 2f0da487820f, --no-commit option.]
The main problem was that dirstate.getcwd() returned just "",
which was interpreted as "we're at the repo root". It now returns
an absolute path.
The util.pathto function was also changed to deal with the "cwd is
an absolute path" case.