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patch: fuzz more aggressively to match patch(1) behaviour...
patch: fuzz more aggressively to match patch(1) behaviour The previous code was assuming a default context of 3 lines. When fuzzing, it would take this value in account to reduce the amount of removed line from hunks top or bottom. For instance, if a hunk has only 2 lines of bottom context, fuzzing with fuzz=1 would do nothing and with fuzz=2 it would remove one of those lines. A hunk with one line of bottom context could not be fuzzed at all. patch(1) has apparently no such restrictions and takes the fuzz level at face value. - test-import.t: fuzz/offset changes at the beginning of file are explained by the new fuzzing behaviour and match patch(1) ones. Patching locations are different but those of my patch(1) do not make a lot of sense right now (patched output are the same) - test-import-bypass.t: more agressive fuzzing makes a patching supposed to fail because of context, succeed. Change the diff to avoid this. - test-mq-merge.t: more agressive fuzzing would allow the merged patch to apply with fuzz, but fortunately we disallow this behaviour. The new output is kept. I have not enough experience with patch(1) fuzzing to know whether aligning our implementation on it is a good or bad idea. Until now, it has been the implementation reference. For instance, "qpush" tolerates fuzz (test-mq-merge.t runs the special case of pushing merge revisions where fuzzing is forbidden).

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r16124:0e0060bf stable
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test-mq-merge.t
173 lines | 3.5 KiB | text/troff | Tads3Lexer
Setup extension:
$ echo "[extensions]" >> $HGRCPATH
$ echo "mq =" >> $HGRCPATH
$ echo "[mq]" >> $HGRCPATH
$ echo "git = keep" >> $HGRCPATH
Test merge with mq changeset as the second parent:
$ hg init m
$ cd m
$ touch a b c
$ hg add a
$ hg commit -m a
$ hg add b
$ hg qnew -d "0 0" b
$ hg update 0
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg add c
$ hg commit -m c
created new head
$ hg merge
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg commit -m merge
abort: cannot commit over an applied mq patch
[255]
$ cd ..
Issue529: mq aborts when merging patch deleting files
$ checkundo()
> {
> if [ -f .hg/store/undo ]; then
> echo ".hg/store/undo still exists"
> fi
> }
Commit two dummy files in "init" changeset:
$ hg init t
$ cd t
$ echo a > a
$ echo b > b
$ hg ci -Am init
adding a
adding b
$ hg tag -l init
Create a patch removing a:
$ hg qnew rm_a
$ hg rm a
$ hg qrefresh -m "rm a"
Save the patch queue so we can merge it later:
$ hg qsave -c -e
copy $TESTTMP/t/.hg/patches to $TESTTMP/t/.hg/patches.1 (glob)
$ checkundo
Update b and commit in an "update" changeset:
$ hg up -C init
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo b >> b
$ hg st
M b
$ hg ci -m update
created new head
# Here, qpush used to abort with :
# The system cannot find the file specified => a
$ hg manifest
a
b
$ hg qpush -a -m
merging with queue at: $TESTTMP/t/.hg/patches.1 (glob)
applying rm_a
now at: rm_a
$ checkundo
$ hg manifest
b
Ensure status is correct after merge:
$ hg qpop -a
popping rm_a
popping .hg.patches.merge.marker
patch queue now empty
$ cd ..
Classic MQ merge sequence *with an explicit named queue*:
$ hg init t2
$ cd t2
$ echo '[diff]' > .hg/hgrc
$ echo 'nodates = 1' >> .hg/hgrc
$ echo a > a
$ hg ci -Am init
adding a
$ echo b > a
$ hg ci -m changea
$ hg up -C 0
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg cp a aa
$ echo c >> a
$ hg qnew --git -f -e patcha
$ echo d >> a
$ hg qnew -d '0 0' -f -e patcha2
Create the reference queue:
$ hg qsave -c -e -n refqueue
copy $TESTTMP/t2/.hg/patches to $TESTTMP/t2/.hg/refqueue (glob)
$ hg up -C 1
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
Merge:
$ HGMERGE=internal:other hg qpush -a -m -n refqueue
merging with queue at: $TESTTMP/t2/.hg/refqueue (glob)
applying patcha
patching file a
Hunk #1 succeeded at 2 with fuzz 1 (offset 0 lines).
fuzz found when applying patch, stopping
patch didn't work out, merging patcha
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
0 files updated, 2 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
applying patcha2
now at: patcha2
Check patcha is still a git patch:
$ cat .hg/patches/patcha
# HG changeset patch
# Parent d3873e73d99ef67873dac33fbcc66268d5d2b6f4
diff --git a/a b/a
--- a/a
+++ b/a
@@ -1,1 +1,2 @@
-b
+a
+c
diff --git a/aa b/aa
new file mode 100644
--- /dev/null
+++ b/aa
@@ -0,0 +1,1 @@
+a
Check patcha2 is still a regular patch:
$ cat .hg/patches/patcha2
# HG changeset patch
# Parent ???????????????????????????????????????? (glob)
# Date 0 0
diff -r ???????????? -r ???????????? a (glob)
--- a/a
+++ b/a
@@ -1,2 +1,3 @@
a
c
+d
$ cd ..