Great thanks for help Scott.
Sorry for bothering you again but I think I found another weak point
of etags-select.
I started using it with the linux kernel's latest source tree.
I generated the TAGS file:
exuberant-ctags -R -e
The size of TAGS file is 54 MB.
Locating the tag with:
etags-select-find-tag-at-point
takes about 10s on Pentium 4 2.4 GHz.
It takes about 15s when loading the TAGS table for the first time.
Using the M-. takes about 0.5 s that is quite acceptable
I did the test with Vim.
I generated the tags table with:
exuberant-ctags -R
The size of tags file is 74 MB (37% larger than emacs TAGS table).
Vim is extremely fast when locating all the tags and showing the
choice list.
It takes much less than 0.5s.
Do you have any idea why etags-select works so slowly ?