Mercurial > hg
view tests/test-patch-offset.t @ 24112:5d5ec4fb7ada
histedit: switch state to store node instead of ctx
Currently, if the node no longer exists, the state object fails to load
and pukes with an exception. Changing the state object to only store the
node allows callers to handle these cases. For instance, in
bootstrapcontinue we can now detect that the node doesn't exist and exit
gracefully.
The alternative is to have the state object store something like None
when the node doesn't exist, but then outside callers won't be able to
access the old node for recovery (unless we store both the node and the
ctx, but why bother).
More importantly it allows us to detect this case when doing hg histedit
--abort. Currently this situation results in both --continue and
--abort being broken and the user has to rm .hg/histedit-state to unwedge
their repo.
(description by Durham Goode)
author | Mateusz Kwapich <mitrandir@fb.com> |
---|---|
date | Thu, 05 Feb 2015 13:10:07 -0800 |
parents | a387b0390082 |
children | 75be14993fda |
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$ cat > writepatterns.py <<EOF > import sys > > path = sys.argv[1] > patterns = sys.argv[2:] > > fp = file(path, 'wb') > for pattern in patterns: > count = int(pattern[0:-1]) > char = pattern[-1] + '\n' > fp.write(char*count) > fp.close() > EOF prepare repo $ hg init a $ cd a These initial lines of Xs were not in the original file used to generate the patch. So all the patch hunks need to be applied to a constant offset within this file. If the offset isn't tracked then the hunks can be applied to the wrong lines of this file. $ python ../writepatterns.py a 34X 10A 1B 10A 1C 10A 1B 10A 1D 10A 1B 10A 1E 10A 1B 10A $ hg commit -Am adda adding a This is a cleaner patch generated via diff In this case it reproduces the problem when the output of hg export does not import patch $ hg import -v -m 'b' -d '2 0' - <<EOF > --- a/a 2009-12-08 19:26:17.000000000 -0800 > +++ b/a 2009-12-08 19:26:17.000000000 -0800 > @@ -9,7 +9,7 @@ > A > A > B > -A > +a > A > A > A > @@ -53,7 +53,7 @@ > A > A > B > -A > +a > A > A > A > @@ -75,7 +75,7 @@ > A > A > B > -A > +a > A > A > A > EOF applying patch from stdin patching file a Hunk #1 succeeded at 43 (offset 34 lines). Hunk #2 succeeded at 87 (offset 34 lines). Hunk #3 succeeded at 109 (offset 34 lines). committing files: a committing manifest committing changelog created 189885cecb41 compare imported changes against reference file $ python ../writepatterns.py aref 34X 10A 1B 1a 9A 1C 10A 1B 10A 1D 10A 1B 1a 9A 1E 10A 1B 1a 9A $ diff aref a $ cd ..