; cperl-mode.el: Don't misinterpret exec_fcn as keyword exec

* lisp/progmodes/cperl-mode.el
(cperl-after-block-and-statement-beg): Recognize _ as part of a
Perl symbol.  Fixes Bug#76851

* test/lisp/progmodes/cperl-mode-resources/cperl-indents.erts
Two new test cases around the edges of Bug#76851

lisp/progmodes/cperl-mode.el

@@ -5539,7 +5539,7 @@ CHARS is a string that contains good characters to have before us (however,
 	   (forward-sexp -1)
 	   (not
 	    (looking-at
-	     "\\(map\\|grep\\|say\\|printf?\\|system\\|exec\\|tr\\|s\\)\\>")))))))
+	     "\\(map\\|grep\\|say\\|printf?\\|system\\|exec\\|tr\\|s\\)\\_>")))))))
 
 
 (defun cperl-indent-exp ()

test/lisp/progmodes/cperl-mode-resources/cperl-indents.erts

@@ -79,3 +79,22 @@ class C
 
 say "done!";
 =-=-=
+
+Name: cperl-keyword-in-subname
+
+=-=
+# Bug#76851
+sub exec_fcn {
+}
+
+sub other {
+}
+=-=-=
+
+Name: cperl-keyword-without-space
+
+=-=
+# Bug#76851, message #13
+my %h = map{$_=>1}
+  @ARGV;
+=-=-=