Accept more wide function signatures in docstrings

* test/lisp/emacs-lisp/bytecomp-tests.el
("warn-wide-docstring-ignore-function-signature.el"): New test.
* lisp/emacs-lisp/bytecomp.el (byte-compile--wide-docstring-p):
Make regexp more allowing to silence warning.
* test/lisp/emacs-lisp/bytecomp-resources/warn-wide-docstring-ignore-function-signature.el:
New file.

3 files changed, 9 insertions, 1 deletions

diff --git a/lisp/emacs-lisp/bytecomp.el b/lisp/emacs-lisp/bytecomp.el
index 48929e62bdf..3b3f7bb6190 100644
--- a/lisp/emacs-lisp/bytecomp.el
+++ b/lisp/emacs-lisp/bytecomp.el
@@ -1705,7 +1705,7 @@ URLs."
               (+ " " (or
                       ;; Arguments.
                       (+ (or (syntax symbol)
-                             (any word "-/:[]&=().?^\\#'")))
+                             (any word "-/:[]&=()<>.,?^\\#*'\"")))
                       ;; Argument that is a list.
                       (seq "(" (* (not ")")) ")")))
               ")")))
diff --git a/test/lisp/emacs-lisp/bytecomp-resources/warn-wide-docstring-ignore-function-signature.el b/test/lisp/emacs-lisp/bytecomp-resources/warn-wide-docstring-ignore-function-signature.el
new file mode 100644
index 00000000000..e83f516e58c
--- /dev/null
+++ b/test/lisp/emacs-lisp/bytecomp-resources/warn-wide-docstring-ignore-function-signature.el
@@ -0,0 +1,4 @@
+;;; -*- lexical-binding: t -*-
+(defun foo-bar ()
+  "This should not warn:
+(fn COMMAND &rest ARGS &key (MARGIN (rx bol (+ \" \"))) (ARGUMENT (rx \"-\" (+ (any \"-\" alnum)) (32 \"=\"))) (METAVAR (rx (32 \" \") (or (+ (any alnum \"_-\")) (seq \"[\" (+? nonl) \"]\") (seq \"<\" (+? nonl) \">\") (seq \"{\" (+? nonl) \"}\")))) (SEPARATOR (rx \", \" symbol-start)) (DESCRIPTION (rx (* nonl) (* \"\\=\\n\" (>= 9 \" \") (* nonl)))) NARROW-START NARROW-END)")
diff --git a/test/lisp/emacs-lisp/bytecomp-tests.el b/test/lisp/emacs-lisp/bytecomp-tests.el
index bc9f8d802a6..1ca44dc7a48 100644
--- a/test/lisp/emacs-lisp/bytecomp-tests.el
+++ b/test/lisp/emacs-lisp/bytecomp-tests.el
@@ -1007,6 +1007,10 @@ byte-compiled.  Run with dynamic binding."
  "defvar .foo-bar. docstring wider than .* characters" 'reverse)
 
 (bytecomp--define-warning-file-test
+ "warn-wide-docstring-ignore-function-signature.el"
+ "defvar .foo-bar. docstring wider than .* characters" 'reverse)
+
+(bytecomp--define-warning-file-test
  "warn-wide-docstring-ignore-override.el"
  "defvar .foo-bar. docstring wider than .* characters" 'reverse)