'tags' setting should search for tags named
tags in the current directory:
When a file name starts with "./", the '.' is replaced with the path
of the current file. But only when the 'd' flag is not included in
You could check the compatibility options that they don't include
Also, files named
tags would be found in parent directories (according to
The stop-directories are appended to the path (for the 'path' option) or to the filename (for the 'tags' option) with a ';'. If you want no stop-directory ("search upward till the root directory) just use ';'.
So, all is looking fine (assuming a tags file actually is there).
:help 'tags' also provides a great troubleshooting tip:
The tagfiles() function can be used to get a list of the file names actually used.
You can use that one with
:echo. Good luck!