record: use commands.diffwsopts instead of ad-hoc diffopts

The record extension is writing its own version of commands.diffwsopts
which is identical to commands.diffwsopts. Based on the principle that
code duplication increases maintenance burden, this patch removes
record's ad-hoc diffopts in favour of commands.diffwsopts

hgext/record.py

@@ -18,15 +18,6 b" testedwith = 'internal'"
 
 lines_re = re.compile(r'@@ -(\d+),(\d+) \+(\d+),(\d+) @@\s*(.*)')
 
-diffopts = [
-    ('w', 'ignore-all-space', False,
-     _('ignore white space when comparing lines')),
-    ('b', 'ignore-space-change', None,
-     _('ignore changes in the amount of white space')),
-    ('B', 'ignore-blank-lines', None,
-     _('ignore changes whose lines are all blank')),
-]
-
 def scanpatch(fp):
     """like patch.iterhunks, but yield different events
 
@@ -420,7 +411,7 b' the hunk is left unchanged.'
 
 @command("record",
          # same options as commit + white space diff options
-         commands.table['^commit|ci'][1][:] + diffopts,
+         commands.table['^commit|ci'][1][:] + commands.diffwsopts,
           _('hg record [OPTION]... [FILE]...'))
 def record(ui, repo, *pats, **opts):
     '''interactively select changes to commit
@@ -665,7 +656,7 b' def uisetup(ui):'
         (qrecord,
          # same options as qnew, but copy them so we don't get
          # -i/--interactive for qrecord and add white space diff options
-         mq.cmdtable['^qnew'][1][:] + diffopts,
+         mq.cmdtable['^qnew'][1][:] + commands.diffwsopts,
          _('hg qrecord [OPTION]... PATCH [FILE]...'))
 
     _wrapcmd('qnew', mq.cmdtable, qnew, _("interactively record a new patch"))