setup: fail if we cannot determine the version number
If running hg fails, exit the setup script unsuccessfully, rather than
proceeding to use a bogus version of "+0-". Using an invalid version number
causes various tests to fail later. Failing early makes it easier to identify
the source of the problem.
It is currently easy for setup.py to fail this way since it sets HGRCPTH to the
empty string before running "hg", which may often disable extensions necessary
to interact with the local repository.
$ echo '[extensions]' >> $HGRCPATH
$ echo 'strip =' >> $HGRCPATH
$ cat >findbranch.py <<EOF
> import re, sys
>
> head_re = re.compile('^#(?:(?:\\s+([A-Za-z][A-Za-z0-9_]*)(?:\\s.*)?)|(?:\\s*))$')
>
> for line in sys.stdin:
> hmatch = head_re.match(line)
> if not hmatch:
> sys.exit(1)
> if hmatch.group(1) == 'Branch':
> sys.exit(0)
> sys.exit(1)
> EOF
$ hg init a
$ cd a
$ echo "Rev 1" >rev
$ hg add rev
$ hg commit -m "No branch."
$ hg branch abranch
marked working directory as branch abranch
(branches are permanent and global, did you want a bookmark?)
$ echo "Rev 2" >rev
$ hg commit -m "With branch."
$ hg export 0 > ../r0.patch
$ hg export 1 > ../r1.patch
$ cd ..
$ if $PYTHON findbranch.py < r0.patch; then
> echo "Export of default branch revision has Branch header" 1>&2
> exit 1
> fi
$ if $PYTHON findbranch.py < r1.patch; then
> : # Do nothing
> else
> echo "Export of branch revision is missing Branch header" 1>&2
> exit 1
> fi
Make sure import still works with branch information in patches.
$ hg init b
$ cd b
$ hg import ../r0.patch
applying ../r0.patch
$ hg import ../r1.patch
applying ../r1.patch
$ cd ..
$ hg init c
$ cd c
$ hg import --exact --no-commit ../r0.patch
applying ../r0.patch
warning: can't check exact import with --no-commit
$ hg st
A rev
$ hg revert -a
forgetting rev
$ rm rev
$ hg import --exact ../r0.patch
applying ../r0.patch
$ hg import --exact ../r1.patch
applying ../r1.patch
Test --exact and patch header separators (issue3356)
$ hg strip --no-backup .
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
>>> import re
>>> p = file('../r1.patch', 'rb').read()
>>> p = re.sub(r'Parent\s+', 'Parent ', p)
>>> file('../r1-ws.patch', 'wb').write(p)
$ hg import --exact ../r1-ws.patch
applying ../r1-ws.patch
$ cd ..