Is there any way to see difference between last two versions of a file using hg commands?

Question

I want something like this

hg vdiff filename.txt -lastRevision -secondLastRevision

Answer 1

I don't know what vdiff is, but how about:

hg diff -r rev1 -r rev2 filename.txt

Edit: to get the last 2 revisions, that would be:

hg diff -r -2 -r -1 filename.txt

Type hg help revisions for information about specifying revisions.

Answer 2

As of this writing, the top answers refer to -1, -2 and -3. The negative integers are historical artifacts and should not be used with modern Mercurial workflows.

Typically, the "last version" means "the currently checked out revision". In that case, to see the changes to file in the currently checked out commit, you can use

hg diff --change . filename.txt

If you'd like to see the last time filename.txt was changed, you can use

hg log --follow --patch --limit 1 filename.txt

The --follow argument causes hg log to follow history, so it'll only output the current revision or its ancestors.

Answer 3

Use

hg diff -r -3 -r -2 file