merge with stable

.hgsigs

@@ -132,3 +132,4 b' 26a5d605b8683a292bb89aea11f37a81b06ac016'
 519bb4f9d3a47a6e83c2b414d58811ed38f503c2 0 iQIVAwUAV42tNyBXgaxoKi1yAQI/Iw//V0NtxpVD4sClotAwffBVW42Uv+SG+07CJoOuFYnmHZv/plOzXuuJlmm95L00/qyRCCTUyAGxK/eP5cAKP2V99ln6rNhh8gpgvmZlnYjU3gqFv8tCQ+fkwgRiWmgKjRL6/bK9FY5cO7ATLVu3kCkFd8CEgzlAaUqBfkNFxZxLDLvKqRlhXxVXhKjvkKg5DZ6eJqRQY7w3UqqR+sF1rMLtVyt490Wqv7YQKwcvY7MEKTyH4twGLx/RhBpBi+GccVKvWC011ffjSjxqAfQqrrSVt0Ld1Khj2/p1bDDYpTgtdDgCzclSXWEQpmSdFRBF5wYs/pDMUreI/E6mlWkB4hfZZk1NBRPRWYikXwnhU3ziubCGesZDyBYLrK1vT+tf6giseo22YQmDnOftbS999Pcn04cyCafeFuOjkubYaINB25T20GS5Wb4a0nHPRAOOVxzk/m/arwYgF0ZZZDDvJ48TRMDf3XOc1jc5qZ7AN/OQKbvh2B08vObnnPm3lmBY1qOnhwzJxpNiq+Z/ypokGXQkGBfKUo7rWHJy5iXLb3Biv9AhxY9d5pSTjBmTAYJEic3q03ztzlnfMyi+C13+YxFAbSSNGBP8Hejkkz0NvmB1TBuCKpnZA8spxY5rhZ/zMx+cCw8hQvWHHDUURps7SQvZEfrJSCGJFPDHL3vbfK+LNwI=
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+149433e68974eb5c63ccb03f794d8b57339a80c4 0 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

.hgtags

@@ -145,3 +145,4 b' 26a5d605b8683a292bb89aea11f37a81b06ac016'
 519bb4f9d3a47a6e83c2b414d58811ed38f503c2 3.9-rc
 299546f84e68dbb9bd026f0f3a974ce4bdb93686 3.9
 ccd436f7db6d5d7b9af89715179b911d031d44f1 3.9.1
+149433e68974eb5c63ccb03f794d8b57339a80c4 3.9.2

mercurial/commands.py

@@ -4355,20 +4355,23 b' def _dograft(ui, repo, *revs, **opts):'
     _('[OPTION]... PATTERN [FILE]...'),
     inferrepo=True)
 def grep(ui, repo, pattern, *pats, **opts):
-    """search for a pattern in specified files and revisions
-
-    Search revisions of files for a regular expression.
-
-    This command behaves differently than Unix grep. It only accepts
-    Python/Perl regexps. It searches repository history, not the
-    working directory. It always prints the revision number in which a
-    match appears.
-
-    By default, grep only prints output for the first revision of a
+    """search revision history for a pattern in specified files
+
+    Search revision history for a regular expression in the specified
+    files or the entire project.
+
+    By default, grep prints the most recent revision number for each
     file in which it finds a match. To get it to print every revision
-    that contains a change in match status ("-" for a match that
-    becomes a non-match, or "+" for a non-match that becomes a match),
-    use the --all flag.
+    that contains a change in match status ("-" for a match that becomes
+    a non-match, or "+" for a non-match that becomes a match), use the
+    --all flag.
+
+    PATTERN can be any Python (roughly Perl-compatible) regular
+    expression.
+
+    If no FILEs are specified (and -f/--follow isn't set), all files in
+    the repository are searched, including those that don't exist in the
+    current branch or have been deleted in a prior changeset.
 
     Returns 0 if a match is found, 1 otherwise.
     """

tests/test-globalopts.t

@@ -307,7 +307,7 b' Testing -h/--help:'
    files         list tracked files
    forget        forget the specified files on the next commit
    graft         copy changes from other branches onto the current branch
-   grep          search for a pattern in specified files and revisions
+   grep          search revision history for a pattern in specified files
    heads         show branch heads
    help          show help for a given topic or a help overview
    identify      identify the working directory or specified revision
@@ -390,7 +390,7 b' Testing -h/--help:'
    files         list tracked files
    forget        forget the specified files on the next commit
    graft         copy changes from other branches onto the current branch
-   grep          search for a pattern in specified files and revisions
+   grep          search revision history for a pattern in specified files
    heads         show branch heads
    help          show help for a given topic or a help overview
    identify      identify the working directory or specified revision

tests/test-help.t

@@ -69,7 +69,7 b' Short help:'
    files         list tracked files
    forget        forget the specified files on the next commit
    graft         copy changes from other branches onto the current branch
-   grep          search for a pattern in specified files and revisions
+   grep          search revision history for a pattern in specified files
    heads         show branch heads
    help          show help for a given topic or a help overview
    identify      identify the working directory or specified revision
@@ -146,7 +146,7 b' Short help:'
    files         list tracked files
    forget        forget the specified files on the next commit
    graft         copy changes from other branches onto the current branch
-   grep          search for a pattern in specified files and revisions
+   grep          search revision history for a pattern in specified files
    heads         show branch heads
    help          show help for a given topic or a help overview
    identify      identify the working directory or specified revision
@@ -784,7 +784,7 b' Test that default list of commands omits'
    files         list tracked files
    forget        forget the specified files on the next commit
    graft         copy changes from other branches onto the current branch
-   grep          search for a pattern in specified files and revisions
+   grep          search revision history for a pattern in specified files
    heads         show branch heads
    help          show help for a given topic or a help overview
    identify      identify the working directory or specified revision
@@ -2201,7 +2201,7 b' Dish up an empty repo; serve it cold.'
   grep
   </a>
   </td><td>
-  search for a pattern in specified files and revisions
+  search revision history for a pattern in specified files
   </td></tr>
   <tr><td>
   <a href="/help/heads">

tests/test-hgweb-json.t

@@ -1467,7 +1467,7 b' help/ shows help topics'
         "topic": "graft"
       },
       {
-        "summary": "search for a pattern in specified files and revisions",
+        "summary": "search revision history for a pattern in specified files",
         "topic": "grep"
       },
       {