Customize tags program and can not work. about counsel-etags

[redguardtoo]

What Emacs you are using? OS? What's output of etags in cli? What's output of ctags in cli?

[maobaoqi]

Thanks for reply! @redguardtoo

I use Win10 and ArchLinux.

For the first and second question, I solved by this setting on Win10 MSYS2. Not use pacman -S ctags on MSYS2, and copy another ctags.exe on Windows into MSYS2 bin folder.

For the last question, Should the project root folder contains TAGS file? In some cases, I do not want to produce TAGS file under project source tree and want to keep the project folder clean.

Additional, if develop a new project using tags jump and complete, this project will use two extra libraries, for example, opencv and glib,
What is the best workflow to generate TAGS when programming C++ ? under one specify tag folder? I have no idea by spending one night to learn.

On archlinux, when open a github clone source code folder, it should be checked as project folder automatically, but it's not do that and always open home folder when call counsel-etags-scan-code command. However, for same github clone source code folder on Win10, it can identify this folder as project folder. (I use github ccv project for testing). I think it's better to open current folder after run counsel-etags-scan-code.

Thanks! Mr.Chen

[redguardtoo]

You have to create tags file in your own project root. Or else things could be unnecessary complicated. For example, if tags file is not in project root, you have to use absolute path for each tag, so tags file is not portable any more.

For 3rd party tags files, see https://github.com/redguardtoo/counsel-etags#specify-multiple-tags-files

Please note counsel-etags only read from 3rd party tags files. It won't create/update them. So you need manually create these tags files. It doesn't matter where they are placed.

[maobaoqi]

@redguardtoo OK, I have to create TAGS file under my project folder and I get into another trouble.;)

Create tags for 3rd party in a single folder and set its path for counsel-etags-extra-tags-files, then I also create tag file in project root folder. When open .cpp file, it can jump but can not complete 3rd party functions using company-etags. From minibuffer information, I find that company-etags just use the project root folder tag file. What's going wrong?

I'm sorry for asking many times and I'm getting more and more confused. Thanks!

[redguardtoo]

Check README, the tag in 3rd party tags file should use full path, not relative path.

besides, ctags use -e to create tags file for Emacs.

I created a step by step guide in README.

[russellfei]

@redguardtoo
The instructions in readme about ctags program customization

(setq counsel-etags-update-tags-backend (lambda () (shell-command "find . -type f -iname \"*.[ch]\" | etags -")))

should be changed to

(setq counsel-etags-update-tags-backend (lambda (x) (shell-command "find . -type f -iname \"*.[ch]\" | etags -")))

otherwise, you will got errors like Wrong number of input (lambda nil ...), 1

A few minutes to get this correct.

[redguardtoo]

d7fcec5 typo in README (Chen Bin)