Change definition of "under the cursor" for ctags with C++ qualifiers

Question

When jumping to a tag it seems that ":" are ignored for the purpose of "under the cursor" (I'm assuming it's "word" "under the cursor"). For example if I want to jump to

myTree::Node something

I want proper Node definition to be identified (I did run ctags with +q), rather than the plethora of system library nodes I have tagged.

I thought I worked around this using

vnoremap ak <ESC>?[^a-zA-Z0-9:_]<CR>lv/[^a-zA-Z0-9:_]<CR>h

so I could easily mark the full qualifier when I'm on top of it, then ctrl-] and g] work nicely.

Unfortunately it seems the ctrl-w commands ignore the mark, and still use only "Node" in the above example for the matching.

I want <ctrl-w> <ctrl-]> to work as expected when the full qualifier is marked. Even better, I would like to change the definition of "under the cursor" or "word", or the used text object to include ":" (this will probably only annoy in Python anyway) so I won't even need my mapping. Is this possible, and if so, how?

Answer 1

As a workaround, I remapped <C-w><C-]>. I am still looking for other, more "holistic" solutions. Added these lines to my .vimrc:

noremap <C-w><C-]> :split<bar>normal vak<CR>g<C-]>
noremap <C-w>] :normal vak<CR>g<C-]>

which conveniently mark said custom text object, and jumps to it if there is a single definition, or opens a list of matches otherwise. The two variants either split the window or jump in the same one.