How to Generate a ctags Database for Go Source Files?

ctag Database for Go Source

For generating ctags database for Go source files, the question proposes using the command ctags -f gosource.tags -R pwd`. However, the issue is that this command may not recognize .go` files.

To address this, the solution provided suggests modifying the .ctags file in the home directory with the following entries:

--langdef=Go
--langmap=Go:.go
--regex-Go=/func([ \t]+\([^)]+\))?[ \t]+([a-zA-Z0-9_]+)//d,func/
--regex-Go=/var[ \t]+([a-zA-Z_][a-zA-Z0-9_]+)//d,var/
--regex-Go=/type[ \t]+([a-zA-Z_][a-zA-Z0-9_]+)//d,type/

These entries enable ctags to recognize and parse Go source files. The recommended command to generate the tags file becomes:

ctags -f gosource.tags -R --language-map=Go:.go `pwd`

By adding the --language-map option, ctags uses the language definitions from the modified .ctags file, ensuring correct recognition of .go files. This allows users to create a tags file that can be used with vim.

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