LeaderfFunction raises ctags error

[fountainer]

• vim or neovim?
  • vim
  • neovim
• vim --version or nvim --version:

VIM - Vi IMproved 8.0 (2016 Sep 12, compiled Mar 29 2018 22:47:34)
MS-Windows 64-bit GUI version with OLE support
Included patches: 1-1655
Compiled by appveyor@APPVYR-WIN
Huge version with GUI.  Features included (+) or not (-):
+acl                +emacs_tags         +mouse              +tag_binary
+arabic             +eval               +mouseshape         +tag_old_static
+autocmd            +ex_extra           +multi_byte_ime/dyn -tag_any_white
+autoservername     +extra_search       +multi_lang         +tcl/dyn
+balloon_eval       +farsi              +mzscheme/dyn       -termguicolors
-balloon_eval_term  +file_in_path       +netbeans_intg      +terminal
+browse             +find_in_path       +num64              -tgetent
++builtin_terms     +float              +ole                -termresponse
+byte_offset        +folding            +packages           +textobjects
+channel            -footer             +path_extra         +timers
+cindent            +gettext/dyn        +perl/dyn           +title
+clientserver       -hangul_input       +persistent_undo    +toolbar
+clipboard          +iconv/dyn          -postscript         +user_commands
+cmdline_compl      +insert_expand      +printer            +vertsplit
+cmdline_hist       +job                +profile            +virtualedit
+cmdline_info       +jumplist           +python/dyn         +visual
+comments           +keymap             +python3/dyn        +visualextra
+conceal            +lambda             +quickfix           +viminfo
+cryptv             +langmap            +reltime            +vreplace
+cscope             +libcall            +rightleft          -vtp
+cursorbind         +linebreak          +ruby/dyn           +wildignore
+cursorshape        +lispindent         +scrollbind         +wildmenu
+dialog_con_gui     +listcmds           +signs              +windows
+diff               +localmap           +smartindent        +writebackup
+digraphs           +lua/dyn            +startuptime        -xfontset
+directx            +menu               +statusline         -xim
-dnd                +mksession          -sun_workshop       +xpm_w32
-ebcdic             +modify_fname       +syntax             -xterm_save
   system vimrc file: "$VIM\vimrc"

• Output of :echo has("python"): 0
• Output of :echo has("python3"): 1
• Output of :echo &pythondll(only vim, not neovim): python27.dll
• Output of :echo &pythonthreedll(only vim, not neovim): python36.dll
• Output of :py print(sys.version): E370: Could not load library python27.dll E263: Sorry, this command is disabled, the Python library could not be loaded
• Output of :py3 print(sys.version): 3.6.3 (v3.6.3:2c5fed8)
• Operating system:
  • Linux
  • Mac OS X
  • Windows
  • Etc.
• Configurations related to LeaderF in vimrc:

let g:Lf_StlSeparator = { 'left': "\ue0b0", 'right': "\ue0b2" }
nmap <leader>n :LeaderfFile D:\Dropbox\MWeb <CR>
nmap <leader>h :LeaderfMru <CR>
noremap <F2> :LeaderfFunction<cr>

Describe your question, feature request, or bug.

LeaderfFunction does not work.

Steps to reproduce

Open manager.py in Leaderf folder and Type command :LeaderfFunction<cr> or press F2.

Actual behaviour

It gives the following error.

Error detected while processing function leaderf#Function#startExpl[2]..leaderf#LfPy:
line    1:
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "C:\Users\sfq\vimfiles\plugged\LeaderF\autoload\leaderf\python\leaderf\manager.
py", line 721, in startExplorer
    content = self._getExplorer().getContent(*args, **kwargs)
  File "C:\Users\sfq\vimfiles\plugged\LeaderF\autoload\leaderf\python\leaderf\function
Expl.py", line 77, in getContent
    return self._formatResult(*result)
  File "C:\Users\sfq\vimfiles\plugged\LeaderF\autoload\leaderf\python\leaderf\function
Expl.py", line 137, in _formatResult
    output = [line.split('\t') for line in result if line is not None]
  File "C:\Users\sfq\vimfiles\plugged\LeaderF\autoload\leaderf\python\leaderf\function
Expl.py", line 137, in <listcomp>
    output = [line.split('\t') for line in result if line is not None]
  File "C:\Users\sfq\vimfiles\plugged\LeaderF\autoload\leaderf\python\leaderf\asyncExe
cutor.py", line 80, in read
    raise Exception(lfEncode(lfBytes2Str(err)))
Exception: 'ctags' 不是内部或外部命令，也不是可运行的程序^M
或批处理文件。^M  

Press F2 again. The error message becomes No content!.

Expected behaviour

[Yggdroot]

You should install ctags first, ctags is an external tool, you can download from here, do not forget to add path to environment variable.

[fountainer]

It works now. I did not know Leaderf depends on ctags. Thanks.

[fountainer]

The generated list of LeaderfFunction is like as follows:

c class FunctionExplorer(Explorer): [C:\Users\sfq\vimfiles\plugged\LeaderF\autoload\leaderf\python\leaderf\functionExpl.py:21 1]

Since LeaderfFunction navigates functions in current buffer only, can I make the result look like as follows?

c class FunctionExplorer(Explorer): [21 1]

It looks much neet especially when the window is small.

[Yggdroot]

Good idea, I have to modify many codes then.