Feature Request: Ability to filter only tags in current file

Command-T can currently filter all tags with :CommandTTag command. However, this is not that useful, since for large project ctags generated tag file can have over million entries and invoking this command brings Vim to a crawl for tens of minutes.

What would be more useful for quick navigation by method name in current file is for Command-T to be able to filter by tags only in current file.

It doesn't look like this would be too hard to implement. command-t/scanner/tag_scanner.rb already uses Vim's built in function taglist({expr}) to generate the list of tags to search. Instead of calling taglist("."), ctags could be invoked directly on the current file. Something like the following shell function will list methods/functions in the file specified

methods ()
{
    if [[ $# == 0 ]]; then
        echo "Usage: methods files";
    else
        ctags -f - --excmd=pattern --format=2 --fields=nKs --sort=yes "$@" | awk -F'\t' '/method|function/ {print $1}';
    fi
}

Another alternative is to user Vim's tagfiles() function to get the handle on all the tag files (relative to current dir) and extract all tags pertinent to the current file.