patch: better handling of sequence of offset patch hunks (issue1941)
The built-in patch implementation applied the hunks to the wrong lines of the
file if the file in the repo has been modified to skew the patch line numbers
and the file contains repetitive sequences of lines.
#!/bin/sh
# http://mercurial.selenic.com/bts/issue660
hg init a
cd a
echo a > a
mkdir b
echo b > b/b
hg commit -A -m "a is file, b is dir"
echo % file replaced with directory
rm a
mkdir a
echo a > a/a
echo % should fail - would corrupt dirstate
hg add a/a
echo % removing shadow
hg rm --after a
echo % should succeed - shadow removed
hg add a/a
echo % directory replaced with file
rm -r b
echo b > b
echo % should fail - would corrupt dirstate
hg add b
echo % removing shadow
hg rm --after b/b
echo % should succeed - shadow removed
hg add b
echo % look what we got
hg st
echo % revert reintroducing shadow - should fail
rm -r a b
hg revert b/b
echo % revert all - should succeed
hg revert --all
hg st
echo % addremove
rm -r a b
mkdir a
echo a > a/a
echo b > b
hg addremove
hg st
echo % commit
hg ci -A -m "a is dir, b is file"
hg st --all
echo % long directory replaced with file
mkdir d
mkdir d/d
echo d > d/d/d
hg commit -A -m "d is long directory"
rm -r d
echo d > d
echo % should fail - would corrupt dirstate
hg add d
echo % removing shadow
hg rm --after d/d/d
echo % should succeed - shadow removed
hg add d
hg ci -md
echo % update should work at least with clean workdir
rm -r a b d
hg up -r 0
hg st --all
rm -r a b
hg up -r 1
hg st --all
exit 0