# HG changeset patch
# User Martin von Zweigbergk <martinvonz@google.com>
# Date 1548456113 28800
# Node ID 7dc160a57025b1893de962e7b9130eeb98317cef
# Parent  888e8b36b8d95614753b721daa702b052825bcec
debugcommands: add a debugpathcopies command

I've been working on storing copy metadata in the changelog instead of
the filelog and this has been useful for debugging.

Do we usually add tests for these?

Differential Revision: https://phab.mercurial-scm.org/D5791

diff -r 888e8b36b8d9 -r 7dc160a57025 mercurial/debugcommands.py
--- a/mercurial/debugcommands.py	Fri Feb 01 20:21:04 2019 -0500
+++ b/mercurial/debugcommands.py	Fri Jan 25 14:41:53 2019 -0800
@@ -38,6 +38,7 @@
     cmdutil,
     color,
     context,
+    copies,
     dagparser,
     encoding,
     error,
@@ -1804,6 +1805,18 @@
     ui.write('\n'.join(repo.pathto(p, cwd) for p in sorted(files)))
     ui.write('\n')
 
+@command('debugpathcopies',
+         cmdutil.walkopts,
+         'hg debugcopies REV1 REV2 [FILE]',
+         inferrepo=True)
+def debugpathcopies(ui, repo, rev1, rev2, *pats, **opts):
+    """show copies between two revisions"""
+    ctx1 = scmutil.revsingle(repo, rev1)
+    ctx2 = scmutil.revsingle(repo, rev2)
+    m = scmutil.match(ctx1, pats, opts)
+    for dst, src in copies.pathcopies(ctx1, ctx2, m).items():
+        ui.write('%s -> %s\n' % (src, dst))
+
 @command('debugpeer', [], _('PATH'), norepo=True)
 def debugpeer(ui, path):
     """establish a connection to a peer repository"""
diff -r 888e8b36b8d9 -r 7dc160a57025 tests/test-completion.t
--- a/tests/test-completion.t	Fri Feb 01 20:21:04 2019 -0500
+++ b/tests/test-completion.t	Fri Jan 25 14:41:53 2019 -0800
@@ -104,6 +104,7 @@
   debugnamecomplete
   debugobsolete
   debugpathcomplete
+  debugpathcopies
   debugpeer
   debugpickmergetool
   debugpushkey
@@ -280,6 +281,7 @@
   debugnamecomplete: 
   debugobsolete: flags, record-parents, rev, exclusive, index, delete, date, user, template
   debugpathcomplete: full, normal, added, removed
+  debugpathcopies: include, exclude
   debugpeer: 
   debugpickmergetool: rev, changedelete, include, exclude, tool
   debugpushkey: 
diff -r 888e8b36b8d9 -r 7dc160a57025 tests/test-help.t
--- a/tests/test-help.t	Fri Feb 01 20:21:04 2019 -0500
+++ b/tests/test-help.t	Fri Jan 25 14:41:53 2019 -0800
@@ -1014,6 +1014,8 @@
    debugoptEXP   (no help text available)
    debugpathcomplete
                  complete part or all of a tracked path
+   debugpathcopies
+                 show copies between two revisions
    debugpeer     establish a connection to a peer repository
    debugpickmergetool
                  examine which merge tool is chosen for specified file