TagList vim plugin is not working

I have issues in using taglist. For example if I TlistOpen, it shows an error E117: Unknown function: taglist#Tlist_Window_Toggle

I am using a Ubuntu18.04 , with vimrc looks like as follows;

test@test-VirtualBox:~/.vim/taglist/plugin$ cat ~/.vimrc
set nocompatible " be iMproved, required
filetype off " required
" set the runtime path to include Vundle and initialize
set rtp+=~/.vim/bundle/Vundle.vim
set rtp+=~/.vim/taglist/plugin/
call vundle#begin()
" alternatively, pass a path where Vundle should install plugins
"call vundle#begin('~/some/path/here')
" let Vundle manage Vundle, required
Plugin 'VundleVim/Vundle.vim'
" The following are examples of different formats supported.
" Keep Plugin commands between vundle#begin/end.
" plugin on GitHub repo
Plugin 'tpope/vim-fugitive'
" plugin from
" Plugin 'L9'
" Git plugin not hosted on GitHub
Plugin 'git://
" git repos on your local machine (i.e. when working on your own plugin)
Plugin 'file:///home/gmarik/path/to/plugin'
" The sparkup vim script is in a subdirectory of this repo called vim.
" Pass the path to set the runtimepath properly.
Plugin 'rstacruz/sparkup', {'rtp': 'vim/'}
" Install L9 and avoid a Naming conflict if you've already installed a
" different version somewhere else.
" Plugin 'ascenator/L9', {'name': 'newL9'}
Plugin 'taglist.vim'
" All of your Plugins must be added before the following line
call vundle#end() " required
filetype plugin indent on " required
" To ignore plugin indent changes, instead use:
"filetype plugin on
"
" Brief help
" :PluginList - lists configured plugins
" :PluginInstall - installs plugins; append `!` to update or just :PluginUpdate
" :PluginSearch foo - searches for foo; append `!` to refresh local cache
" :PluginClean - confirms removal of unused plugins; append `!` to auto-approve removal
"
" see :h vundle for more details or wiki for FAQ
" Put your non-Plugin stuff after this line
set tags=/home/test/code/tags

I have my taglist cloned to .vim/taglist/plugin. My Exuberant Ctags is installed in /usr/bin/ctags and the path is available in PATH. I have installed the vim plugin manager vundle. I have my cscope and ctags set for the directory code. However when I TlistOpen in vim, it throws an error message E117: Unknown function: taglist#Tlist_Window_Toggle

1 Answer

Let's start by removing all the comment noise from your vimrc:

set nocompatible " be iMproved, required
filetype off " required
set rtp+=~/.vim/bundle/Vundle.vim
set rtp+=~/.vim/taglist/plugin/
call vundle#begin()
Plugin 'VundleVim/Vundle.vim'
Plugin 'tpope/vim-fugitive'
Plugin 'git://
Plugin 'file:///home/gmarik/path/to/plugin'
Plugin 'rstacruz/sparkup', {'rtp': 'vim/'}
Plugin 'taglist.vim'
call vundle#end() " required
filetype plugin indent on " required
set tags=/home/test/code/tags

as well as the examples that Vundle's README.md tells you to remove:

set nocompatible " be iMproved, required
filetype off " required
set rtp+=~/.vim/bundle/Vundle.vim
set rtp+=~/.vim/taglist/plugin/
call vundle#begin()
Plugin 'VundleVim/Vundle.vim'
Plugin 'taglist.vim'
call vundle#end() " required
filetype plugin indent on " required
set tags=/home/test/code/tags

and the irrelevant boilerplate:

set rtp+=~/.vim/bundle/Vundle.vim
set rtp+=~/.vim/taglist/plugin/
call vundle#begin()
Plugin 'VundleVim/Vundle.vim'
Plugin 'taglist.vim'
call vundle#end() " required
set tags=/home/test/code/tags

The first thing that catches the eye is that you are trying to manage that plugin both manually:

set rtp+=~/.vim/taglist/plugin/

and with your plugin manager:

Plugin 'taglist.vim'

which doesn't make any sense.

The second thing that catches the eye is that you are adding ~/.vim/taglist/plugin/ to :help 'runtimepath' instead of ~/.vim/taglist/, which prevents Vim from finding ~/.vim/taglist/autoload/ and thus from being able to call taglist#Tlist_Window_Toggle().

Changing:

set rtp+=~/.vim/taglist/plugin/

to:

set rtp+=~/.vim/taglist/

should temporarily get you out of trouble but you will still be left with a mess.

I would suggest you abandon the manual method and let your plugin manager handle everything:

1. Delete ~/.vim/taglist/ from your machine.
2. Remove set rtp+=~/.vim/taglist/ from your vimrc.
3. Replace Plugin 'taglist.vim' with Plugin 'yegappan/taglist' in your vimrc.
4. Read your plugin manager's documentation to get familiar with it.