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-rw-r--r--Etc/zsh-development-guide3
1 files changed, 2 insertions, 1 deletions
diff --git a/Etc/zsh-development-guide b/Etc/zsh-development-guide
index 793e2d255..77f065029 100644
--- a/Etc/zsh-development-guide
+++ b/Etc/zsh-development-guide
@@ -391,7 +391,8 @@ arguments are:
     implement multiple builtins
   - the options the builtin accepts, given as a string containing the
     option characters (the above example makes the builtin accept the
-    options `f', `l', `a', `g', and `s')
+    options `f', `l', `a', `g', and `s').  Passing NULL here disables
+    all flag handling, i.e. even "--".
   - and finally a optional string containing option characters that
     will always be reported as set when calling the C-function (this,
     too, can be used when using one C-function to implement multiple