# HG changeset patch
# User Kyle Lippincott <spectral@google.com>
# Date 2021-02-12 19:04:03
# Node ID 921e1253c8ba97827e68fd98d2791978324d7dc6
# Parent  cd91543431604b0fcaa601a3aa8b3c862f0d7c41

gendoc: support defaults on customopts a bit better

Without this, a customopt will very likely render like this:

```
-foo   does foo (default: <hgext.myextension.MyOpt object at 0x7f31...>)
```

I copied this logic from how this is handled in mercurial/help.py.

Differential Revision: https://phab.mercurial-scm.org/D9988

diff --git a/doc/gendoc.py b/doc/gendoc.py
--- a/doc/gendoc.py
+++ b/doc/gendoc.py
@@ -31,6 +31,7 @@ from mercurial import (
     commands,
     encoding,
     extensions,
+    fancyopts,
     help,
     minirst,
     pycompat,
@@ -86,6 +87,8 @@ def get_opts(opts):
         if b'\n' in desc:
             # only remove line breaks and indentation
             desc = b' '.join(l.lstrip() for l in desc.split(b'\n'))
+        if isinstance(default, fancyopts.customopt):
+            default = default.getdefaultvalue()
         if default:
             default = stringutil.forcebytestr(default)
             desc += _(b" (default: %s)") % default