From: Philip Kaludercic <philipk@posteo.net>
Date: Tue, 15 Jun 2021 21:12:02 +0000 (+0200)
Subject: Fix argument parser for rcirc-define-command with string input
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Fix argument parser for rcirc-define-command with string input

* rcirc.el (rcirc-define-command): Require at least one space between
arguments
---

diff --git a/lisp/net/rcirc.el b/lisp/net/rcirc.el
index dfa80bb4089..4d98d65d58a 100644
--- a/lisp/net/rcirc.el
+++ b/lisp/net/rcirc.el
@@ -2403,8 +2403,8 @@ that, an interactive form can specified."
                    (insert "\\`")
                    (when arguments
                      (dotimes (_ (1- (length arguments)))
-                       (insert "\\(?:\\(.+?\\)[[:space:]]*"))
-                     (insert "\\(.*\\)")
+                       (insert "\\(?:\\(.+?\\)"))
+                     (insert "\\(?:[[:space:]]+\\(.*\\)\\)")
                      (dotimes (i (1- (length arguments)))
                        (when (< i optional)
                          (insert "?"))