Re: How should I modify a normal mode map set by a plugin?

On Mar 11, 2014 11:33 AM, "Paul Isambert" <zappathustra@free.fr> wrote:
>
> Hello Ethan,
>
> Ethan Hereth <advocateddrummer@gmail.com> a écrit:
> > I have a question that I think should have a better answer.
> >
> > I used to have a couple normal mode maps in my .vimrc that went like this:
> >
> > nnoremap n nzz
> > nnoremap N Nzz
> >
> > which, as I'm sure I don't need to tell most of you, causes the next search result to be centered (usually) when the user presses n/N. These maps worked great for a long time... Until I installed the IndexedSearch plugin, which I do really like by the way. This broke my maps which annoyed me for quite some time until today when I decided to track down the cause.
> >
> > Typing 'verbose map n' gave me the following:
> >
> > n n * :let v:errmsg=''<CR>:silent! norm! n<CR>:call <SNR>34_ShowCurrentSearchIndex(0,'!')<CR>
> > Last set from ~/.vim/bundle/IndexedSearch/plugin/IndexedSearch.vim
> >
> > So now I see that the IndexedSearch plugin has stolen my maps. So, for now I have changed the appropriate lines in the IndexedSearch.vim plugin as follows to get back the previous behavior without losing IndexedSearch's addition. So, I'm happy now.
> >
> > nnoremap <silent>n :let v:errmsg=''<cr>:silent! norm! nzz<cr>:call <SID>ShowCurrentSearchIndex(0,'!')<cr>
> > nnoremap <silent>N :let v:errmsg=''<cr>:silent! norm! Nzz<cr>:call <SID>ShowCurrentSearchIndex(0,'!')<cr>
> >
> > My question is: Is there a better way to do this? Instead of actually modifying the plugin code I'd like to simply modify the map after IndexedSearch has set it. I did skim both Google and ':help map' but nothing popped out at me as answering my question.
>
> Add a plugin in your “after” directory, e.g.:
>
>     " Beware, no 'noremap' this time!
>     nmap n nzz
>     nmap N Nzz
>
> in “$HOME/.vim/after/plugin/IndexedSearch.vim” (replace “.vim” with
> “vimfiles” if you’re on Windows). Files in “after” are loaded, well,
> after anything else.

If there is no z or zz mapping this variant is not different from

    nnoremap n nzz
    nnoremap N Nzz

. You just suggest to disable plugin mapping. The only reason why this works is because when mapping rhs starts with lhs this part is not remapped.

Files in .vim/after/ directory are loaded just like files in .vim/. Just in default &runtimepath option .vim/after/ directory is placed after all other directories, but there nothing else special about it. Plugins like pathogen/VAM/Vundle usually put other plugin's after/ (but not root) directories after .vim/after so "after anything else" statement is no longer true. It is not very common though for plugins to have after/ directories.

>
> Best,
> Paul
>
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