revert: evaluate subrepos to revert against the working directory

Reverting to a revision where the subrepo didn't exist will now abort, and
matching subrepos against the working directory is consistent with how filesets
are evaluated since 5b85a5bc5bbb.

mercurial/cmdutil.py

@@ -3049,14 +3049,14 b' def revert(ui, repo, ctx, parents, *pats'
             _performrevert(repo, parents, ctx, actions, interactive)
 
         # get the list of subrepos that must be reverted
-        subrepomatch = scmutil.match(ctx, pats, opts)
-        targetsubs = sorted(s for s in ctx.substate if subrepomatch(s))
+        subrepomatch = scmutil.match(wctx, pats, opts)
+        targetsubs = sorted(s for s in wctx.substate if subrepomatch(s))
 
         if targetsubs:
             # Revert the subrepos on the revert list
             for sub in targetsubs:
                 try:
-                    ctx.sub(sub).revert(ctx.substate[sub], *pats, **opts)
+                    wctx.sub(sub).revert(ctx.substate[sub], *pats, **opts)
                 except KeyError:
                     raise util.Abort("subrepository '%s' does not exist in %s!"
                                       % (sub, short(ctx.node())))

tests/test-subrepo-recursion.t

@@ -528,9 +528,19 b' The subrepo must sorts after the explici'
   $ hg init test
   $ cd test
   $ hg init x
+  $ echo abc > abc.txt
+  $ hg ci -Am "abc"
+  adding abc.txt
   $ echo "x = x" >> .hgsub
   $ hg add .hgsub
   $ touch a x/a
   $ hg add a x/a
 
+  $ hg ci -Sm "added x"
+  committing subrepository x
+  $ echo abc > x/a
+  $ hg revert --rev '.^' "set:subrepo('glob:x*')"
+  abort: subrepository 'x' does not exist in 25ac2c9b3180!
+  [255]
+
   $ cd ..