fbamend: add unhide command for easy unhiding of commits

Summary:
This command helps the user to bring back the commits to life with an explicit
command - wihtout the need to change working copy parent or create bookmarks.

Test Plan: see test

Reviewers: #fbhgext, durham, kulshrax, quark

Reviewed By: #fbhgext, quark

Subscribers: ryanmce

Differential Revision: https://phab.mercurial-scm.org/D179

hgext3rd/fbamend/hide.py

@@ -14,6 +14,7 @@ from mercurial import (
     cmdutil,
     error,
     hg,
+    extensions,
     obsolete,
     registrar,
     scmutil,
@@ -78,3 +79,20 @@ def hide(ui, repo, *revs, **opts):
 
         if len(bmchanges) > 0:
             ui.status(_('%i bookmarks removed\n') % len(bmchanges))
+
+@command('^unhide', [('r', 'rev', [], _("revisions to unhide"))])
+def unhide(ui, repo, *revs, **opts):
+    """unhide changesets and their ancestors
+    """
+    unfi = repo.unfiltered()
+    revs = list(revs) + opts.pop('rev', [])
+    revs = set(scmutil.revrange(unfi, revs))
+    ctxs = unfi.set("::(%ld) & obsolete()", revs)
+
+    with repo.wlock(), repo.lock(), repo.transaction('unhide'):
+        try:
+            inhibit = extensions.find('inhibit')
+            inhibit.revive(ctxs, operation='unhide')
+        except KeyError:
+            raise error.Abort(_('cannot unhide - inhibit extension '
+                                'is not enabled'))

tests/test-fbamend-hide.t

@@ -1,6 +1,7 @@
   $ cat >> $HGRCPATH << EOF
   > [extensions]
   > fbamend=$TESTDIR/../hgext3rd/fbamend
+  > inhibit=$TESTDIR/../hgext3rd/inhibit.py
   > drawdag=$RUNTESTDIR/drawdag.py
   > [experimental]
   > evolution = createmarkers, allowunstable
@@ -60,3 +61,25 @@ Hide multiple commits with bookmarks on them, hide wc parent
   $ hg log -G -T '{rev} {desc} {bookmarks}\n'
   @  0 A
   
+
+Unhide stuff
+  $ hg unhide 2
+  $ hg log -G -T '{rev} {desc} {bookmarks}\n'
+  o  2 C
+  |
+  o  1 B
+  |
+  @  0 A
+  
+  $ hg unhide -r 4 -r 3
+  $ hg log -G -T '{rev} {desc} {bookmarks}\n'
+  o  4 E
+  |
+  | o  3 D
+  | |
+  o |  2 C
+  |/
+  o  1 B
+  |
+  @  0 A
+