--- a/mercurial/help/environment.txt Fri Oct 23 11:04:53 2015 -0400
+++ b/mercurial/help/environment.txt Sat Oct 24 06:59:26 2015 +0100
@@ -61,8 +61,14 @@
HGPLAINEXCEPT
This is a comma-separated list of features to preserve when
- HGPLAIN is enabled. Currently the only value supported is "i18n",
- which preserves internationalization in plain mode.
+ HGPLAIN is enabled. Currently the following values are supported:
+
+ ``alias``
+ Don't remove aliases.
+ ``i18n``
+ Preserve internationalization.
+ ``revsetalias``
+ Don't remove revset aliases.
Setting HGPLAINEXCEPT to anything (even an empty string) will
enable plain mode.