* lisp/progmodes/perl-mode.el (perl--format-regexp): New defconst.
(perl--end-of-format-p): New function.
(perl-continuation-line-p): Use it.
(perl-calculate-indent): Use it. Make the lines of the formlist stay
at column 0.
* test/lisp/progmodes/cperl-mode-resources/cperl-bug-35925.pl: New
test file.
* test/lisp/progmodes/cperl-mode-tests.el (cperl-test-bug-35925): New
test.
