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-rw-r--r--lisp/progmodes/perl-mode.el6
1 files changed, 4 insertions, 2 deletions
diff --git a/lisp/progmodes/perl-mode.el b/lisp/progmodes/perl-mode.el
index f864f6a34cd..127b24cb890 100644
--- a/lisp/progmodes/perl-mode.el
+++ b/lisp/progmodes/perl-mode.el
@@ -214,7 +214,9 @@
(defconst perl--syntax-exp-intro-regexp
(concat "\\(?:\\(?:^\\|[^$@&%[:word:]]\\)"
(regexp-opt perl--syntax-exp-intro-keywords)
- "\\|[-?:.,;|&+*=!~({[]\\|\\(^\\)\\)[ \t\n]*")))
+ "\\|[?:.,;|&*=!~({[]"
+ "\\|[^-+][-+]" ;Bug#42168: `+' is intro but `++' isn't!
+ "\\|\\(^\\)\\)[ \t\n]*")))
(defun perl-syntax-propertize-function (start end)
(let ((case-fold-search nil))
@@ -235,7 +237,7 @@
(match-beginning 0))))))
(string-to-syntax ". p"))))
;; Handle funny names like $DB'stop.
- ("\\$ ?{?^?[_[:alpha:]][_[:alnum:]]*\\('\\)[_[:alpha:]]" (1 "_"))
+ ("\\$ ?{?\\^?[_[:alpha:]][_[:alnum:]]*\\('\\)[_[:alpha:]]" (1 "_"))
;; format statements
("^[ \t]*format.*=[ \t]*\\(\n\\)"
(1 (prog1 "\"" (perl-syntax-propertize-special-constructs end))))