Problems for search macros/variables at-point for verilog projects

[guoqinglei]

The emacs.d from redguardtoo is the config I have been using for over three months.
One of the reasons I like this is the fast start speed and proved high programming efficiency.
Recently, I want to use this config to develop some verilog projects. However, this config is not suitable in some cases. For example, when I press C-] at the point of a Macro, i.e.,
`DEF_MACRO, it reported "No tag is found. Grep "`DEF_MACRO" at directory: /bin/bash: -c: line 0: unexpected EOF while looking for matching `.

I wonder what I could do to fix it.

Another similar feature I am eagerly to want is that I usually need to search the variable/word at point . I know the command counsel-etags-find-tag-at-point can be used, but It only shows some definitions of this variable/word. Actually, I want to know all the occcurences of the variable/word in the buffer, just like the way of swiper or occur command works. Is there a command like swiper-at-point or occur-at-point ?

[guoqinglei]

I have found some commands: isearch-forward-symbol-at-point and swiper-thing-at-point, it's almost well although not perfect.

The remaining question is: how to use the counsel-etags-find-tag-at-point to search the tag of Macro in verilog projects ? It's a little special that the Macro in verilog always comes with a prefix `.

I think counsel-etags-find-tag-at-point need to ignore the first character ` when do the job in minor mode of verilog.

[redguardtoo]

You can change ~/.ctags, add your own regular expression to parse new tags. See https://github.com/redguardtoo/counsel-etags#ctags-setup

Besides, you can write Emacs Lisp to update TAGS, see https://github.com/redguardtoo/counsel-etags#insert-extra-content-into-tags-file-after-its-updated

[guoqinglei]

I think the problem may still exist for me. Actually I still prefer to improve the function of counsel-etags-find-tag-at-point.
For string " `MACRO " in the verilog code,
when the mouse point is at character "M", the tag this command will get is actually "`MACRO" instead of "MACRO",
here the character "`" is the cause of the problem.
Then the question is: how to ignore the special character such as "`" in verilog when we want to get the tag of the point ?

[redguardtoo]

You can customise counsel-etags-find-tag-name-function.

[guoqinglei]

I may get what you mean. Maybe I need to modify the function counsel-etags-find-tag-name-default defined as follow:

(defun counsel-etags-find-tag-name-default ()
  "Find tag at point."
  (let ((tag-name (find-tag-default)))
    (when (and (memq major-mode
                     counsel-etags-major-modes-to-strip-default-tag-name)
           (string-match "^\\(`.*`\\|=.*=\\|~.*~\\|\".*\"\\|'.*'\\)$" tag-name))
      (setq tag-name (substring tag-name 1 (1- (length tag-name)))))
    tag-name))

The key point is to modify the lines with "string-match", is that right ?

[redguardtoo]

Yes. The tag name at point is found here. It's used as a keyword for searching the TAGS file.