hg-diff - Man Page

diff repository (or selected files)

Synopsis

hg diff [OPTION]... ([-c REV] | [--from REV1] [--to REV2]) [FILE]...

Description

Show differences between revisions for the specified files.

Differences between files are shown using the unified diff format.

Note: hg diff may generate unexpected results for merges, as it will default to comparing against the working directory's first parent changeset if no revisions are specified. To diff against the conflict regions, you can use --config diff.merge=yes.

By default, the working directory files are compared to its first parent. To see the differences from another revision, use --from. To see the difference to another revision, use --to. For example, hg diff --from .^ will show the differences from the working copy's grandparent to the working copy, hg diff --to . will show the diff from the working copy to its parent (i.e. the reverse of the default), and hg diff --from 1.0 --to 1.2 will show the diff between those two revisions.

Alternatively you can specify -c/--change with a revision to see the changes in that changeset relative to its first parent (i.e. hg diff -c 42 is equivalent to hg diff --from 42^ --to 42)

Without the -a/--text option, diff will avoid generating diffs of files it detects as binary. With -a, diff will generate a diff anyway, probably with undesirable results.

Use the -g/--git option to generate diffs in the git extended diff format. For more information, read hg help diffs.

Examples:

compare a file in the current working directory to its parent:
```
hg diff foo.c
```
compare two historical versions of a directory, with rename info:
```
hg diff --git --from 1.0 --to 1.2 lib/
```
get change stats relative to the last change on some date:
```
hg diff --stat --from "date('may 2')"
```
diff all newly-added files that contain a keyword:
```
hg diff "set:added() and grep(GNU)"
```

compare a revision and its parents:

hg diff -c 9353                  # compare against first parent
hg diff --from 9353^ --to 9353   # same using revset syntax
hg diff --from 9353^2 --to 9353  # compare against the second parent

Returns 0 on success.