In my development environment, I have several header files directories. I need these directories to be both in my path, and in my tags list.
To accomplish this I use the following Python based script:
set path=.,$_WINCEROOT/.,$_WINCEROOT/public/,$_WINCEROOT/public/common/oak/inc,$_WINCEROOT/public/common/ddk/inc,$_WINCEROOT/public/common/sdk/inc,$_WINCEROOT/private/cellcore/dtpt/inc
set tags=./tags,../tags,../inc/tags
function! BuildTagsFromPath()
python << EOF
import sys
import vim
paths = vim.eval("&path") # &path gets the option path.
pathsSplit = paths.split(",")
# prepend original tag list before path.
tags = vim.eval("&tags")
for path in pathsSplit:
tags += "%s/tags," % (path)
cmdSetTags = "set tags=%s" % tags
vim.command(cmdSetTags)
EOF
endfunction
call BuildTagsFromPath()