; cperl-mode.el: Fix border cases of inserting with elisp

; cperl-mode.el: Fix border cases of inserting with elisp

* lisp/progmodes/cperl-mode.el (cperl-unwind-to-safe): Replace
(and extend) inline comment by a docstring.  Handle edge cases when
inserting text with elisp (related to Bug#28962).
(cperl-process-here-doc): Add syntax-type `here-doc-start'.
(cperl-find-pods-heres): Make sure that the results of this
function are immediately visible.

* test/lisp/progmodes/cperl-mode-tests.el (cperl-test-bug-14343):
Add test cases for "empty" here-documents and inserting at the
edges of a here-document.