Re: global tags over tramp (gtags.el)

[Shigio YAMAGUCHI]

Hi,
Can you execute global-client?

$ PATH=/usr/local/share/gtags/script:$PATH
$ which global-client
/usr/local/share/gtags/script/global-client
$ _

Regards,
Shigio

2019年10月17日(木) 0:04 <address@hidden>:
>
> Hi Guys.
>
> I am editing files remotely with tramp. Then I run gtags-goto-tag And I
> am getting this error:
> --8<---------------cut here---------------start------------->8---
> Debugger entered--Lisp error: (file-missing "Searching for program" "No such 
> file or directory" "global-client")
>   call-process("global-client" nil t nil "-xi" "--encode-path=\" \011\"" 
> #("QUERY_FOR_SINGLE_SALE" 0 21 (fontified t)))
>   (if (equal flag "C") (call-process gtags-global-command nil t nil option 
> "--encode-path=\" \011\"" context tagname) (call-process gtags-global-command 
> nil t nil option "--encode-path=\" \011\"" tagname))
>   (setq status (if (equal flag "C") (call-process gtags-global-command nil t 
> nil option "--encode-path=\" \011\"" context tagname) (call-process 
> gtags-global-command nil t nil option "--encode-path=\" \011\"" tagname)))
>   (let (status) (gtags-push-tramp-environment) (cond ((equal gtags-path-style 
> (quote absolute)) (setq option (concat option "a"))) ((and (not 
> gtags-tramp-active) (equal gtags-path-style (quote root))) (let (rootdir) (if 
> gtags-rootdir (setq rootdir gtags-rootdir) (setq rootdir 
> (gtags-get-rootpath))) (if rootdir (cd rootdir))))) (setq status (if (equal 
> flag "C") (call-process gtags-global-command nil t nil option 
> "--encode-path=\" \011\"" context tagname) (call-process gtags-global-command 
> nil t nil option "--encode-path=\" \011\"" tagname))) 
> (gtags-pop-tramp-environment) (if (not (= 0 status)) (progn (message 
> (buffer-substring (point-min) (1- (point-max)))) (gtags-pop-context)) 
> (goto-char (point-min)) (setq lines (count-lines (point-min) (point-max))) 
> (cond ((= 0 lines) (cond ((char-equal flag-char 80) (message "%s: path not 
> found" tagname)) ((char-equal flag-char 103) (message "%s: pattern not found" 
> tagname)) ((char-equal flag-char 73) (message "%s: token not found" tagname)) 
> ((char-equal flag-char 115) (message "%s: symbol not found" tagname)) (t 
> (message "%s: tag not found" tagname))) (gtags-pop-context) (kill-buffer 
> buffer) (set-buffer save)) ((= 1 lines) (message "Searching %s ... Done" 
> tagname) (gtags-select-it t other-win)) (t (if (null other-win) 
> (switch-to-buffer buffer) (switch-to-buffer-other-window buffer)) 
> (gtags-select-mode)))))
>   (let (option context save prefix buffer lines flag-char) (setq save 
> (current-buffer)) (setq flag-char (string-to-char flag)) (if (equal flag-char 
> nil) (setq flag-char (string-to-char " "))) (setq option "-x") (if 
> (gtags-ignore-casep) (setq option (concat option "i"))) (if (char-equal 
> flag-char 67) (setq context (concat "--from-here=" (number-to-string 
> (gtags-current-lineno)) ":" (replace-in-string (gtags-buffer-file-name) 
> "\\\\" "/"))) (setq option (concat option flag))) (cond ((char-equal 
> flag-char 67) (setq prefix "(CONTEXT)")) ((char-equal flag-char 80) (setq 
> prefix "(P)")) ((char-equal flag-char 102) (setq prefix "(F)")) ((char-equal 
> flag-char 103) (setq prefix "(GREP)")) ((char-equal flag-char 73) (setq 
> prefix "(IDUTILS)")) ((char-equal flag-char 115) (setq prefix "(S)")) 
> ((char-equal flag-char 114) (setq prefix "(R)")) (t (setq prefix "(D)"))) (if 
> gtags-select-buffer-single (progn (let (now-gtags-buffer-stack now-buffer 
> now-gtags-point-stack now-point) (setq now-gtags-buffer-stack (reverse 
> gtags-buffer-stack)) (setq now-gtags-point-stack (reverse gtags-point-stack)) 
> (setq gtags-buffer-stack nil) (setq gtags-point-stack nil) (while 
> now-gtags-buffer-stack (setq now-buffer (car now-gtags-buffer-stack)) (setq 
> now-point (car now-gtags-point-stack)) (if (and (buffer-name now-buffer) (not 
> ...)) (progn (setq gtags-buffer-stack ...) (setq gtags-point-stack ...))) 
> (setq now-gtags-buffer-stack (cdr now-gtags-buffer-stack)) (setq 
> now-gtags-point-stack (cdr now-gtags-point-stack)))) (let (now-buffer-list 
> now-buffer) (setq now-buffer-list (buffer-list)) (while now-buffer-list (setq 
> now-buffer (car now-buffer-list)) (if (string-match "*GTAGS SELECT*" 
> (buffer-name now-buffer)) (kill-buffer now-buffer)) (setq now-buffer-list 
> (cdr now-buffer-list)))))) (setq buffer (generate-new-buffer 
> (generate-new-buffer-name (concat "*GTAGS SELECT* " prefix tagname)))) 
> (set-buffer buffer) (message "Searching %s ..." tagname) (let (status) 
> (gtags-push-tramp-environment) (cond ((equal gtags-path-style (quote 
> absolute)) (setq option (concat option "a"))) ((and (not gtags-tramp-active) 
> (equal gtags-path-style (quote root))) (let (rootdir) (if gtags-rootdir (setq 
> rootdir gtags-rootdir) (setq rootdir (gtags-get-rootpath))) (if rootdir (cd 
> rootdir))))) (setq status (if (equal flag "C") (call-process 
> gtags-global-command nil t nil option "--encode-path=\" \011\"" context 
> tagname) (call-process gtags-global-command nil t nil option 
> "--encode-path=\" \011\"" tagname))) (gtags-pop-tramp-environment) (if (not 
> (= 0 status)) (progn (message (buffer-substring (point-min) (1- 
> (point-max)))) (gtags-pop-context)) (goto-char (point-min)) (setq lines 
> (count-lines (point-min) (point-max))) (cond ((= 0 lines) (cond ((char-equal 
> flag-char 80) (message "%s: path not found" tagname)) ((char-equal flag-char 
> 103) (message "%s: pattern not found" tagname)) ((char-equal flag-char 73) 
> (message "%s: token not found" tagname)) ((char-equal flag-char 115) (message 
> "%s: symbol not found" tagname)) (t (message "%s: tag not found" tagname))) 
> (gtags-pop-context) (kill-buffer buffer) (set-buffer save)) ((= 1 lines) 
> (message "Searching %s ... Done" tagname) (gtags-select-it t other-win)) (t 
> (if (null other-win) (switch-to-buffer buffer) (switch-to-buffer-other-window 
> buffer)) (gtags-select-mode))))))
>   gtags-goto-tag(#("QUERY_FOR_SINGLE_SALE" 0 21 (fontified t)) "")
>   (let (tagname prompt input) (setq tagname (gtags-current-token)) 
> (gtags-push-context) (gtags-goto-tag tagname ""))
>   sunshavi/find-tag()
>   funcall-interactively(sunshavi/find-tag)
>   call-interactively(sunshavi/find-tag nil nil)
>   command-execute(sunshavi/find-tag)
> --8<---------------cut here---------------end--------------->8---
>
> Besides that i have found this on gtags.el
> --8<---------------cut here---------------start------------->8---
> (defun gtags-push-tramp-environment ()
>     (let ((tramp-path default-directory))
>       (if (string-match gtags-tramp-path-regexp tramp-path)
>           (let ((shell         (match-string 1 tramp-path))
>                 (user-and-host (match-string 2 tramp-path))
>                 (cwd           (match-string 3 tramp-path)))
>             ;
>             ; Server side GLOBAL cannot treat other than rsh and ssh.
>             ;
>             (cond
>              ((equal shell "rsh"))
>              ((equal shell "ssh"))
>              ((equal shell "rcp")
>               (setq shell "rsh"))
>              ((equal shell "scp")
>               (setq shell "ssh"))
>              (t
>                (setq shell "ssh")))
>             (let (host user)
>               (if (string-match gtags-tramp-user-host-regexp user-and-host)
>                   (progn
>                     (setq user (match-string 1 user-and-host))
>                     (setq host (match-string 2 user-and-host)))
>                   (progn
>                     (setq user nil)
>                     (setq host user-and-host)))
>               ;
>               ; Move to tramp mode only when all the items are assembled.
>               ;
>               (if (and shell host cwd)
>                   (progn
>                     (setq gtags-tramp-active t)
>                     (setq gtags-tramp-saved-global-command 
> gtags-global-command)
>                     ; Use 'global-client even if environment variable 
> GTAGSGLOBAL is set.
>                     ;(setq gtags-global-command (getenv "GTAGSGLOBAL"))
>                     ;(if (or (not gtags-global-command) (equal 
> gtags-global-command ""))
>                         (setq gtags-global-command "global-client")
>                     ;)
>                     (push (concat "GTAGSREMOTESHELL=" shell) 
> process-environment)
>                     (push (concat "GTAGSREMOTEHOST="   host) 
> process-environment)
>                     (push (concat "GTAGSREMOTEUSER="   user) 
> process-environment)
>                     (push (concat "GTAGSREMOTECWD="     cwd) 
> process-environment))))))))
> --8<---------------cut here---------------end--------------->8---
>
> I have contacted the tramp author: Michael Albinus. Who have told me:
> --8<---------------cut here---------------start------------->8---
> The backtrace shows that call-process is applied. This runs always a
> *local* process; Tramp is not involved.
> --8<---------------cut here---------------end--------------->8---
>
> As a workaround. I have tested etags and ggtags.el. Let me know If You
> need more information about the issue.
>
> Best Regards. AR
>
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> Bug-global mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/bug-global



-- 
Shigio YAMAGUCHI <address@hidden>
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