Re: Why doesn't the syntax file load the function from the ftplugin file?

AW> On 6/16/2013 10:42 AM, Andy Wokula wrote:
CB> On 6/16/2013 11:36 AM, Christian Brabandt wrote:

> On So, 16 Jun 2013, Suresh Govindachar wrote:
>
> The file vimfiles/ftplugin/notes.vim starts as follows:
>
> if exists("b:did_ftplugin")
> finish
> endif
> let b:did_ftplugin = 1 " Don't load another plugin for this
buffer
>
> nmap <buffer> <localleader>u Yp$x^v$r-
>
> nmap <buffer> <F5> :syn off\|syn on<cr>
>
> setlocal spell
> setlocal smartindent
> setlocal textwidth=80
> setlocal complete=.
>
> if !exists("*s:MyNotesFoldLevel")
> function! MyNotesFoldLevel(acline)
>
> let cline = a:acline
> <omitting rest of the function>
> endfunction
> endif
> <omitting rest of the stuff in this file>
>
> The file vimfiles/syntax/notes.vim starts as follows:
>
> syn clear
> if !exists("*s:MyNotesFoldLevel")
> ru ftplugin/notes.vim
> endif
>
> %g/^/let i = line('.') |
> \ let level = MyNotesFoldLevel(i) |
> <omitting rest of the stuff in this file>
>
> But the very first time a notes file is loaded, I get the error
message:
>
> Error detected while processing
C:\opt\vim\vimfiles\syntax\notes.vim:
> line 35:
> E117: Unknown function: MyNotesFoldLevel
> E15: Invalid expression: MyNotesFoldLevel(i) | <omitting rest
> of the stuff>
>
> After that, loading the same or different notes file is OK.
>
> How to fix the error message for the very first load?
>

AW> I'd define functions in an autoload script:
AW> vimfiles\autoload\mynotes.vim
AW>
AW> This script should contain a function
AW> function! mynotes#FoldLevel(acline)
AW> ...
AW> endfunction
AW>
AW> The script will only be loaded once, when invoking one of the
AW> script's functions for the first time.

CB> In your .vimrc, put the filetype plugin on command /before/
CB> the :syntax on command. This makes sure, the filetype plugin
CB> is loaded before the syntax script.

I saw AW's suggestion before I saw CB's, and implemented the scheme
based on autoload. It works as expected.

Thanks,

--Suresh


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