# HG changeset patch
# User Martin von Zweigbergk <martinvonz@google.com>
# Date 2020-08-06 17:53:00
# Node ID c3376a724e3299042614517734ccd81f229cbd11
# Parent  735756ecda8c5b7cbaabe5460af86882445f2cfb

templater: teach template loader to use open_template() function

The template loader can apparently load templates from relative paths,
so I needed to add that support to `open_template()`.

This takes the number of failing tests with PyOxidizer from 54 to 34.

Differential Revision: https://phab.mercurial-scm.org/D8907

diff --git a/mercurial/templater.py b/mercurial/templater.py
--- a/mercurial/templater.py
+++ b/mercurial/templater.py
@@ -913,7 +913,8 @@ class loader(object):
         """Get parsed tree for the given template name. Use a local cache."""
         if t not in self.cache:
             try:
-                self.cache[t] = util.readfile(self._map[t])
+                mapfile, fp = open_template(self._map[t])
+                self.cache[t] = fp.read()
             except KeyError as inst:
                 raise templateutil.TemplateNotFound(
                     _(b'"%s" not in template map') % inst.args[0]
@@ -1092,7 +1093,7 @@ def open_template(name, templatepath=Non
     will then be the relative path.
     '''
     # Does the name point directly to a map file?
-    if os.path.isabs(name):
+    if os.path.isfile(name) or os.path.isabs(name):
         return name, open(name, mode='rb')
 
     # Does the name point to a template in the provided templatepath, or