# HG changeset patch
# User mpm@selenic.com
# Date 1124234564 28800
# Node ID fe69ecd3437cfc895e39e94cc36e0ef52330ed43
# Parent  7f3f55903496afd5e82ea631c0a9a0828c872297
hg cat: accept changeset hashes



diff -r 7f3f55903496 -r fe69ecd3437c mercurial/commands.py
--- a/mercurial/commands.py	Tue Aug 16 14:53:47 2005 -0800
+++ b/mercurial/commands.py	Tue Aug 16 15:22:44 2005 -0800
@@ -455,7 +455,14 @@
     """output the latest or given revision of a file"""
     r = repo.file(relpath(repo, [file1])[0])
     if rev:
-        n = r.lookup(rev)
+        try:
+            # assume all revision numbers are for changesets
+            n = repo.lookup(rev)
+            change = repo.changelog.read(n)
+            m = repo.manifest.read(change[0])
+            n = m[relpath(repo, [file1])[0]]
+        except hg.RepoError, KeyError:
+            n = r.lookup(rev)
     else:
         n = r.tip()
     fp = make_file(repo, r, opts['output'], node=n)