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I am using emacs to code in Verilog/SystemVerilog and the commented lines begin with //.

I like to use the "ido find files at point" and so I have '(ido-use-filename-at-point (quote guess)) in custom-set-variables.

It works perfectly except when I am trying to open another file while my cursor is on the first word of a comment like //Revision Control:. It tries to find a file called Revision in // path.

How can I disable the ido ffap functionality for the root / and // paths? Another way that would serve the functionality is if the ido ffap disables automatically on lines starting with //.

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Reset to default
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Assuming that there are no special ffap-handlers for verilog-mode yet in ffap-alist the following code should do the trick:

(defun ffap-verilog (name) (let ((inhibit-changing-match-data t) ;; string-match should not change match data (ppss (syntax-ppss))) (if (and (eq (syntax-ppss-context ppss) 'comment) ;; we are inside a comment (= (line-number-at-pos (nth 8 ppss)) (line-number-at-pos (point))) ;; limit the match to the line starting the comment (string-match "/[/*]\\([[:alnum:]_.]\\)+$" (buffer-substring-no-properties (nth 8 ppss) (point)))) "" name))) (add-to-list 'ffap-alist '(verilog-mode . ffap-verilog) 'append)

The special case is checked that the leading // or /* of a comment is directly followed by a string which could be miss-interpreted by ffap as an url or a path with wildcard. Note however, that other strings inside of a comment starting with \\ are not handled since these could really be urls.

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