Mercurial > hg
view tests/test-commit-unresolved.t @ 31478:9335dc6b2a9c
pager: avoid shell=True on subprocess.Popen for better errors (issue5491)
man(1) behaves as poorly as Mercurial without this change. This cribs
from git's run-command[0], which has a list of characters that imply a
string that needs to be run using 'sh -c'. If none of those characters
are present in the command string, we can use shell=False mode on
subprocess and get significantly better error messages (see the test)
when the pager process is invalid. With a complicated pager command
(that contains one of the unsafe characters), we behave as we do today
(which is no worse than git manages.)
I briefly tried tapdancing in a thread to catch early pager exits, but
it's just too perilous: you get races between fd duping operations and
a bad pager exiting, and it's too hard to differentiate between a
slow-bad-pager result and a fast-human-quit-pager-early result.
I've observed some weird variation in exit code handling in the "bad
experience" case in test-pager.t: on my Mac hg predictably exits
nonzero, but on Linux hg always exits zero in that case. For now,
we'll work around it with || true. :(
0: https://github.com/git/git/blob/cddbda4bc87b9d2c985b6749b1cf026b15e2d3e7/run-command.c#L201
author | Augie Fackler <augie@google.com> |
---|---|
date | Wed, 15 Mar 2017 20:33:47 -0400 |
parents | c15f06109b7a |
children | 41ef02ba329b |
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$ addcommit () { > echo $1 > $1 > hg add $1 > hg commit -d "${2} 0" -m $1 > } $ commit () { > hg commit -d "${2} 0" -m $1 > } $ hg init a $ cd a $ addcommit "A" 0 $ addcommit "B" 1 $ echo "C" >> A $ commit "C" 2 $ hg update -C 0 1 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo "D" >> A $ commit "D" 3 created new head Merging a conflict araises $ hg merge merging A warning: conflicts while merging A! (edit, then use 'hg resolve --mark') 1 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon [1] Correct the conflict without marking the file as resolved $ echo "ABCD" > A $ hg commit -m "Merged" abort: unresolved merge conflicts (see 'hg help resolve') [255] Mark the conflict as resolved and commit $ hg resolve -m A (no more unresolved files) $ hg commit -m "Merged" Test that if a file is removed but not marked resolved, the commit still fails (issue4972) $ hg up ".^" 1 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg merge 2 merging A warning: conflicts while merging A! (edit, then use 'hg resolve --mark') 1 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon [1] $ hg rm --force A $ hg commit -m merged abort: unresolved merge conflicts (see 'hg help resolve') [255] $ hg resolve -ma (no more unresolved files) $ hg commit -m merged created new head $ cd ..