* lisp/progmodes/cperl-mode.el (cperl-style-alist): Add
cperl-close-paren-offset to the settings for PBP style.
* test/lisp/progmodes/cperl-mode-tests.el (cperl-bug19709):
New test to verify correct indentation of closing parentheses (Bug#19709).
* test/lisp/progmodes/cperl-mode-resources/cperl-bug-19709.pl:
New test case with code from the bug report.
* test/lisp/progmodes/cperl-mode-resources/cperl-indent-styles.pl:
Add a new test clause for cperl-close-paren-offset.
* lisp/progmodes/cperl-mode.el (cperl-mode): Add a fix
which is only required for Emacs versions older than 27.
* test/lisp/progmodes/cperl-mode-tests.el (cperl-bug30393):
Add a test to verify correct indentation (bug#30393).
* lisp/progmodes/cperl-mode.el: Delete a comment which explains a
bug which has been fixed a long time ago (bug#44073).
* test/lisp/progmodes/cperl-mode-tests.el
(cperl-mode-fontify-punct-vars): Add regression tests to verify
that fontification of punctuation variables doesn't start strings.
* test/lisp/progmodes/cperl-mode-tests.el
(cperl-mode-test-indent-exp): Make sure that cperl-mode is active
for testing 'cperl-indent-exp', also skip this test under
perl-mode.
* test/lisp/progmodes/cperl-mode-resources/cperl-indent-exp.pl:
Eliminate dependency on unrelated customizable variables (bug#10483).
* lisp/progmodes/cperl-mode.el (cperl-style-alist)
(cperl-set-style): Add indentation style recommended by Damian Conway's
book "Perl Best Practices".
* test/lisp/progmodes/cperl-mode-tests.el
(cperl-mode-test-indent-styles): Add a test to verify indentation
and unraveling of conditionals (bug#43457).
* lisp/progmodes/cperl-mode.el (cperl-indent-exp): Fix (Bug#10483)
Perl expressions (e.g. function calls) ending in ")" without
statement terminator on the same line no longer loop endlessly.
