comparison tests/test-mq-qdiff.out @ 9725:3f522d2fa633

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.

9724:40ef3bf3e04a

-hello world
-goodbye world
+hello  world
+     goodbye world
 7
qdiff -w
diff -r 35fb829491c1 lines
--- a/lines
+++ b/lines
@@ -1,3 +1,5 @@
+
+
 1
 2
 3

9725:3f522d2fa633

-hello world
-goodbye world
+hello  world
+     goodbye world
 7
% qdiff -w
diff -r 35fb829491c1 lines
--- a/lines
+++ b/lines
@@ -1,3 +1,5 @@
+
+
 1
 2
 3
% qdiff --inverse
diff -r 35fb829491c1 lines
--- a/lines
+++ b/lines
@@ -1,11 +1,9 @@
-
-
 1
 2
 3
 4
-hello  world
-     goodbye world
+hello world
+goodbye world
 7
 8
 9