[PATCH 1 of 4 V6 STABLE] revert: be more explicit that changes are lost

[Kevin Bullock]

# HG changeset patch
# User Kevin Bullock <kbullock at ringworld.org>
# Date 1308626152 18000
# Branch stable
# Node ID 10a8c14a8fdca3d00fee266b3af949f2bd5d74e5
# Parent  848a6658069eb88a920ac3ec1220c0c53fae9d0e
revert: be more explicit that changes are lost

 BEFORE:
   $ hg revert
   abort: no files or directories specified
   (use --all to revert all files)

 AFTER:
   $ hg revert
   abort: no files or directories specified
   (use --all to discard all changes)

diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -4182,7 +4182,7 @@
 
     if not pats and not opts.get('all'):
         raise util.Abort(_('no files or directories specified'),
-                         hint=_('use --all to revert all files'))
+                         hint=_('use --all to discard all changes'))
 
     ctx = scmutil.revsingle(repo, opts.get('rev'))
     node = ctx.node()
diff --git a/tests/test-confused-revert.t b/tests/test-confused-revert.t
--- a/tests/test-confused-revert.t
+++ b/tests/test-confused-revert.t
@@ -60,7 +60,7 @@
 
   $ hg revert
   abort: no files or directories specified
-  (use --all to revert all files)
+  (use --all to discard all changes)
   [255]
 
 Revert should be ok now:
diff --git a/tests/test-revert.t b/tests/test-revert.t
--- a/tests/test-revert.t
+++ b/tests/test-revert.t
@@ -186,7 +186,7 @@
 
   $ hg revert -rtip
   abort: no files or directories specified
-  (use --all to revert all files)
+  (use --all to discard all changes)
   [255]
 
 should succeed