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-rw-r--r--doc/plugins/write.mdwn10
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/plugins/write.mdwn b/doc/plugins/write.mdwn
index c4f668373..7bbde94fa 100644
--- a/doc/plugins/write.mdwn
+++ b/doc/plugins/write.mdwn
@@ -71,3 +71,13 @@ use the following hashes, using a page name as the key:
Many plugins will need to add dependencies to this hash; the best way to do
it is by using the IkiWiki::add_depends function, which takes as its
parameters the page name and a [[GlobList]] of dependencies to add.
+
+## RCS plugins
+
+ikiwiki's support for revision control systems also uses pluggable perl
+modules. These are in the `IkiWiki::RCS` namespace, for example
+`IkiWiki::RCS::svn`.
+
+Each RCS plugin must support all the IkiWiki::rcs_* functions.
+See IkiWiki::RCS::Stub for the full list of functions. It's ok if
+rcs_getctime does nothing except for throwing an error.