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diff: add --inverse option...
diff: add --inverse option Most of the time, one can reverse a diff by swapping the revisions passed with -r but it happens that if you use the global -R, and diff against the tip of the current repo, you can't swap the revisions. One use-case for that is reviewing changes from a bundle before unbundling. One could also pipe the output of `hg diff` to a command line filter that reverses the diff, but that would remove the benefit from color diffs. Therefore, having an option in `hg diff` to reverse a diff is a good thing. The option flag selection was tricky. GNU patch uses -R/--reverse but -R is already used as a global option and --reverse would make --rev ambiguous.

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test-merge-prompt.out
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/ tests / test-merge-prompt.out
adding file1
adding file2
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
created new head
# non-interactive merge
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:
M file2
C file1
file1:
1
changed
file2:
2
changed
# interactive merge
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
local changed file1 which remote deleted
use (c)hanged version or (d)elete? remote changed file2 which local deleted
use (c)hanged version or leave (d)eleted? 0 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
status:
file2: No such file or directory
C file1
file1:
1
changed
file2 does not exist
# interactive merge with bad input
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
local changed file1 which remote deleted
use (c)hanged version or (d)elete? unrecognized response
local changed file1 which remote deleted
use (c)hanged version or (d)elete? unrecognized response
local changed file1 which remote deleted
use (c)hanged version or (d)elete? remote changed file2 which local deleted
use (c)hanged version or leave (d)eleted? unrecognized response
remote changed file2 which local deleted
use (c)hanged version or leave (d)eleted? 1 files updated, 0 files merged, 1 files removed, 0 files unresolved
(branch merge, don't forget to commit)
status:
M file2
R file1
file1 does not exist
file2:
2
changed
# interactive merge with not enough input
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
local changed file1 which remote deleted
use (c)hanged version or (d)elete? remote changed file2 which local deleted
use (c)hanged version or leave (d)eleted? abort: response expected
failed
status:
file2: No such file or directory
C file1
file1:
1
changed
file2 does not exist