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Diffstat (limited to 'lisp/progmodes/cc-defs.el')
| -rw-r--r-- | lisp/progmodes/cc-defs.el | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/lisp/progmodes/cc-defs.el b/lisp/progmodes/cc-defs.el index a1270243550..9edaf465346 100644 --- a/lisp/progmodes/cc-defs.el +++ b/lisp/progmodes/cc-defs.el @@ -1563,6 +1563,28 @@ with value CHAR in the region [FROM to)." (forward-char))))) +;; Miscellaneous macro(s) +(defvar c-string-fences-set-flag nil) +;; Non-nil when we have set string fences with `c-restore-string-fences'. +(defmacro c-with-string-fences (&rest forms) + ;; Restore the string fences, evaluate FORMS, then remove them again. It + ;; should only be used at the top level of "boundary" functions in CC Mode, + ;; i.e. those called from outside CC Mode which directly or indirectly need + ;; unbalanced string markers to have their string-fence syntax-table text + ;; properties. This includes all calls to `c-parse-state'. This macro will + ;; be invoked recursively; however the `c-string-fences-set-flag' mechanism + ;; should ensure consistency, when this happens. + (declare (debug t)) + `(unwind-protect + (progn + (unless c-string-fences-set-flag + (c-restore-string-fences)) + (let ((c-string-fences-set-flag t)) + ,@forms)) + (unless c-string-fences-set-flag + (c-clear-string-fences)))) + + ;; Macros to put overlays (Emacs) or extents (XEmacs) on buffer text. ;; For our purposes, these are characterized by being possible to ;; remove again without affecting the other text properties in the |