bug#74245: 30.0.92; CPerl subroutine signatures are left open when last param is $

[Peter Oliver <p.d.oliver@mavit.org.uk>]

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Test attached.

-- 
Peter Oliver

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From b388d1c69051a9f49db129254afc62d2840bcb0f Mon Sep 17 00:00:00 2001
From: Peter Oliver <git@mavit.org.uk>
Date: Thu, 7 Nov 2024 19:22:21 +0000
Subject: [PATCH] ; cperl-mode.el: Add a test for Bug#74245

* test/lisp/progmodes/cperl-mode-resources/cperl-bug-74245.pl: New test data.

* test/lisp/progmodes/cperl-mode-tests.el (cperl-test-bug-74245): Verify
that a bare \"$\" can appear at the end of a subroutine signature.
---
 .../cperl-mode-resources/cperl-bug-74245.pl      | 16 ++++++++++++++++
 test/lisp/progmodes/cperl-mode-tests.el          |  9 +++++++++
 2 files changed, 25 insertions(+)
 create mode 100644 test/lisp/progmodes/cperl-mode-resources/cperl-bug-74245.pl

diff --git a/test/lisp/progmodes/cperl-mode-resources/cperl-bug-74245.pl b/test/lisp/progmodes/cperl-mode-resources/cperl-bug-74245.pl
new file mode 100644
index 00000000000..44d1e49bd36
--- /dev/null
+++ b/test/lisp/progmodes/cperl-mode-resources/cperl-bug-74245.pl
@@ -0,0 +1,16 @@
+# This resource file can be run with cperl--run-testcases from
+# cperl-tests.el and works with both perl-mode and cperl-mode.
+
+# -------- signature where last parameter is ignored: input -------
+package P {
+use v5.36;
+sub ignore ($first, $) {}
+ignore(qw(first second));
+}
+# -------- signature where last parameter is ignored: expected output -------
+package P {
+  use v5.36;
+  sub ignore ($first, $) {}
+  ignore(qw(first second));
+}
+# -------- signature where last parameter is ignored: end -------
diff --git a/test/lisp/progmodes/cperl-mode-tests.el b/test/lisp/progmodes/cperl-mode-tests.el
index 7a6e0b3b64a..625c41cf52c 100644
--- a/test/lisp/progmodes/cperl-mode-tests.el
+++ b/test/lisp/progmodes/cperl-mode-tests.el
@@ -1590,6 +1590,15 @@ cperl-test-bug-72296
     (should (equal (nth 8 (cperl-test-ppss code "/")) 9)))
   )
 
+(ert-deftest cperl-test-bug-74245 ()
+  "Verify that a bare \"$\" can appear at the end of a subroutine signature.
+It must not be mistaken for \"$)\"."
+  (cperl--run-test-cases
+   (ert-resource-file "cperl-bug-74245.pl")
+   (while (null (eobp))
+     (cperl-indent-command)
+     (forward-line 1))))
+
 (ert-deftest test-indentation ()
   (ert-test-erts-file (ert-resource-file "cperl-indents.erts")))
 
-- 
2.47.0