ipc: clarify the patch version for sth like 4.2

diff --git a/docs/ipc b/docs/ipc
index 508e789cd31855715bdbc5f3ebe8f13b44e105a4..0a1f9cfeb5d1b05fd1db4d3a9ea15376733b9348 100644 (file)
--- a/docs/ipc
+++ b/docs/ipc
@@ -551,7 +551,7 @@ minor (integer)::
        bugfixes might be introduced in patch releases, too.
 patch (integer)::
        The patch version of i3, such as +1+ (when the complete version is
-       +4.2.1+).
+       +4.2.1+). For versions such as +4.2+, patch will be set to +0+.
 human_readable (string)::
        A human-readable version of i3 containing the precise git version,
        build date and branch name. When you need to display the i3 version to