NAME

       hg diff - 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.

OPTIONS

       -r,--rev <REV[+]>
              revision (DEPRECATED)

       --from <REV1>
              revision to diff from

       --to <REV2>
              revision to diff to

       -c,--change <REV>
              change made by revision

       -a, --text
              treat all files as text

       -g, --git
              use git extended diff format (DEFAULT: diff.git)

       --binary
              generate binary diffs in git mode (default)

       --nodates
              omit dates from diff headers

       --noprefix
              omit a/ and b/ prefixes from filenames

       -p, --show-function
              show which function each change is in (DEFAULT: diff.showfunc)

       --reverse
              produce a diff that undoes the changes

       -w, --ignore-all-space
              ignore white space when comparing lines

       -b, --ignore-space-change
              ignore changes in the amount of white space

       -B, --ignore-blank-lines
              ignore changes whose lines are all blank

       -Z, --ignore-space-at-eol
              ignore changes in whitespace at EOL

       -U,--unified <NUM>
              number of lines of context to show

       --stat output diffstat-style summary of changes

       --root <DIR>
              produce diffs relative to subdirectory

       -I,--include <PATTERN[+]>
              include names matching the given patterns

       -X,--exclude <PATTERN[+]>
              exclude names matching the given patterns

       -S, --subrepos
              recurse into subrepositories

              [+] marked option can be specified multiple times

                                                                                                        HG(DIFF)