addremove: support addremove with explicit paths in subrepos

Git and svn subrepos are currently not supported.

mercurial/help/subrepos.txt

@@ -82,8 +82,10 b' Interaction with Mercurial Commands'
     ignored.
 
 :addremove: addremove does not recurse into subrepos unless
-    -S/--subrepos is specified.  Git and Subversion subrepositories
-    will print a warning and continue.
+    -S/--subrepos is specified.  However, if you specify the full
+    path of a directory in a subrepo, addremove will be performed on
+    it even without -S/--subrepos being specified.  Git and
+    Subversion subrepositories will print a warning and continue.
 
 :archive: archive does not recurse in subrepositories unless
     -S/--subrepos is specified.

mercurial/scmutil.py

@@ -723,9 +723,17 b' def addremove(repo, matcher, prefix, opt'
     ret = 0
     join = lambda f: os.path.join(prefix, f)
 
+    def matchessubrepo(matcher, subpath):
+        if matcher.exact(subpath):
+            return True
+        for f in matcher.files():
+            if f.startswith(subpath):
+                return True
+        return False
+
     wctx = repo[None]
     for subpath in sorted(wctx.substate):
-        if opts.get('subrepos'):
+        if opts.get('subrepos') or matchessubrepo(m, subpath):
             sub = wctx.sub(subpath)
             try:
                 submatch = matchmod.narrowmatcher(subpath, m)

tests/test-subrepo-deep-nested-change.t

@@ -147,9 +147,18 b' Test relative path printing + subrepos'
   A sub1/foo
   R sub1/sub2/test.txt
   $ hg update -Cq
+  $ touch sub1/sub2/folder/bar
+  $ hg addremove sub1/sub2
+  adding sub1/sub2/folder/bar (glob)
+  $ hg status -S
+  A sub1/sub2/folder/bar
+  ? foo/bar/abc
+  ? sub1/foo
+  $ hg update -Cq
   $ rm sub1/sub2/folder/test.txt
   $ rm sub1/sub2/test.txt
   $ hg ci -ASm "remove test.txt"
+  adding sub1/sub2/folder/bar (glob)
   removing sub1/sub2/folder/test.txt (glob)
   removing sub1/sub2/test.txt (glob)
   adding sub1/foo (glob)