transplant: restore dirstate correctly at unexpected failure
Before this patch, transplant can't restore dirstate as expected at
failure other than one while patching. This causes:
- unexpected file status
- dirstate refers already rollback-ed parent
(only at failure of transplanting the 2nd or later revision)
To restore dirstate correctly also at unexpected failure, this patch
encloses scope of store lock and transaction by 'dirstateguard'.
This is temporary fixing for stable branch. See
DirstateTransactionPlan wiki page for detail about the future plan to
treat dirstate consistently around scope boundary of transaction.
https://mercurial.selenic.com/wiki/DirstateTransactionPlan
This patch also adds 'if lock' examination for safety
'lock.release()', because creating 'dirstateguard' object may fail
unexpectedly (e.g. IOError for saving dirstate).
BTW, in the test script, putting section header '[extensions]' into
'.hg/hgrc' is needed to fix incomplete disabling 'abort' extension at
4d1382fd96ff.
Test for
b5605d88dc27: Make ui.prompt repeat on "unrecognized response" again
(issue897)
840e2b315c1f: Fix misleading error and prompts during update/merge
(issue556)
$ status() {
> echo "--- status ---"
> hg st -A file1 file2
> for file in file1 file2; do
> if [ -f $file ]; then
> echo "--- $file ---"
> cat $file
> else
> echo "*** $file does not exist"
> fi
> done
> }
$ hg init
$ echo 1 > file1
$ echo 2 > file2
$ hg ci -Am 'added file1 and file2'
adding file1
adding file2
$ hg rm file1
$ echo changed >> file2
$ hg ci -m 'removed file1, changed file2'
$ hg co 0
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo changed >> file1
$ hg rm file2
$ hg ci -m 'changed file1, removed file2'
created new head
Non-interactive merge:
$ hg merge -y
local changed file1 which remote deleted
use (c)hanged version or (d)elete? c
remote changed file2 which local deleted
use (c)hanged version or leave (d)eleted? c
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ status
--- status ---
M file2
C file1
--- file1 ---
1
changed
--- file2 ---
2
changed
Interactive merge:
$ hg co -C
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg merge --config ui.interactive=true <<EOF
> c
> d
> EOF
local changed file1 which remote deleted
use (c)hanged version or (d)elete? c
remote changed file2 which local deleted
use (c)hanged version or leave (d)eleted? d
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ status
--- status ---
file2: * (glob)
C file1
--- file1 ---
1
changed
*** file2 does not exist
Interactive merge with bad input:
$ hg co -C
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge --config ui.interactive=true <<EOF
> foo
> bar
> d
> baz
> c
> EOF
local changed file1 which remote deleted
use (c)hanged version or (d)elete? foo
unrecognized response
local changed file1 which remote deleted
use (c)hanged version or (d)elete? bar
unrecognized response
local changed file1 which remote deleted
use (c)hanged version or (d)elete? d
remote changed file2 which local deleted
use (c)hanged version or leave (d)eleted? baz
unrecognized response
remote changed file2 which local deleted
use (c)hanged version or leave (d)eleted? c
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ status
--- status ---
M file2
R file1
*** file1 does not exist
--- file2 ---
2
changed
Interactive merge with not enough input:
$ hg co -C
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg merge --config ui.interactive=true <<EOF
> d
> EOF
local changed file1 which remote deleted
use (c)hanged version or (d)elete? d
remote changed file2 which local deleted
use (c)hanged version or leave (d)eleted? abort: response expected
[255]
$ status
--- status ---
file2: * (glob)
C file1
--- file1 ---
1
changed
*** file2 does not exist