update comment

This is not only called from post-update in all configurations. Also, the
comment was innaccurate about what the post-update hook is passed.

diff --git a/IkiWiki/Rcs/git.pm b/IkiWiki/Rcs/git.pm
index fea1c11eb4a9c9f7d599c863abbfa13ebfcaa179..b538c524fa76f4fba5396a99c5d70420b667440e 100644 (file)
--- a/IkiWiki/Rcs/git.pm
+++ b/IkiWiki/Rcs/git.pm
@@ -424,14 +424,15 @@ sub rcs_recentchanges ($) { #{{{
 sub rcs_notify () { #{{{
        # Send notification mail to subscribed users.
        #
+       # This is typically run as the post-update hook, though some setups
+       # may run it from the post-commit hook too.
+       #
        # In usual Git usage, hooks/update script is presumed to send
        # notification mails (see git-receive-pack(1)).  But we prefer
        # hooks/post-update to support IkiWiki commits coming from a
        # cloned repository (through command line) because post-update
        # is called _after_ each ref in repository is updated (update
-       # hook is called _before_ the repository is updated).  Since
-       # post-update hook does not accept command line arguments, we
-       # don't have an $ENV variable in this function.
+       # hook is called _before_ the repository is updated).
        #
        # Here, we rely on a simple fact: we can extract all parts of the
        # notification content by parsing the "HEAD" commit (which also