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hglib: cache detected diff tools

It's somewhat expensive to detect all the installed tools, so don't do it
more than once per application instance.

Changeset e479ff36a915…

Parent 17ad0cd5f14a…

by Steve Borho

Changes to one file · Browse files at e479ff36a915 Showing diff from parent 17ad0cd5f14a Diff from another changeset...

Change 1 of 2 Show Entire File tortoisehg/​util/​hglib.py Stacked
 
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@@ -226,7 +226,11 @@
  return values     +_difftools = None  def difftools(ui): + global _difftools + if _difftools: + return _difftools   tools = {}   for cmd, path in ui.configitems('extdiff'):   if cmd.startswith('cmd.'): @@ -255,6 +259,7 @@
  mopts = ui.config('merge-tools', t + '.diff3args', '')   dopts, mopts = shlex.split(dopts), shlex.split(mopts)   tools[t] = [filemerge._findtool(ui, t), dopts, mopts] + _difftools = tools   return tools