Tip 103Configure Vim to Work with ctags

If we want to use Vim’s ctag navigation commands, we must ensure that the tags file is up-to-date and that Vim knows where to look for it.

Tell Vim Where to Find the Tags File

The ‘tags’ option specifies where Vim should look to find a tags file ('tags'). When ./ is used in the ‘tags’ option, Vim replaces it with the path of the currently active file. We can inspect the defaults:

=> :set tags?
<= tags=./tags,tags

With these settings, Vim looks for a tags file in the directory of the current file and in the working directory. Under certain conditions, if a match is found in the first tags file, Vim won’t even look in the second file (see tags-option for more details). Using Vim’s default settings, ...

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