How to disable all Vim-LaTeX mappings?

Question

I like some of the features provided by the Vim-LaTeX suite, but not all of them.

In particular, I dislike all of the mappings like [[ = \left[ \right] and the automatic placeholder stuff with <++>. I am a very fast typist but with that comes more typing mistakes, which I correct almost instantly by pressing backspace. Unfortunately, if something has automatically added a bunch of place-holders or expanded some expression, I then have to move around the document and remove more characters than necessary. For example, if I accidentally press [ twice, instead of only having to delete one character, I have to delete 10.

Having already looked through the documentation, and some of the source, I have managed to disable some of these "features", but not all of them:

In particular:

let g:Tex_SmartKeyBS = 0
let g:Tex_SmartKeyQuote = 0
let g:Tex_SmartKeyDot = 0

(Turn off maps for backspace, double quote and triple dot.)

let g:Imap_UsePlaceHolders = 0

(Turn off <++> placeholder insertion.)

But I can't seem to find a way of turning off the other stuff. Anyone have any suggestions?

Edit: I was able to "disable" some more things by setting:

let g:Tex_Leader = '`tex'
let g:Tex_Leader2 = ',tex'

(Which stops some expansions but still not all. It's not really disabling it but just making it less likely that you're going to type in `texa as opposed to the potentially more common `a, for example.)

PS: Personally, I think it is very poor practice to make an optional package that, when installed, greatly changes the default handling of your system. I don't mind some intelligent source highlighting etc, or some new commands (that don't clobber any old ones), but it seems unhelpful to enable this drastic kind of key remapping by default.

Answer 1

Side note for anyone who ends up here looking for the same thing I am:

To disable specific IMAPs, add trivial IMAP commands to the file ~/.vim/after/ftplugin/tex.vim (you may have to create it if it does not exist). For instance,

" Undo some latex-suite macros
call IMAP('()', '()', 'tex')
call IMAP('{}', '{}', 'tex')
call IMAP('[]', '[]', 'tex')
call IMAP('::', '::', 'tex')
call IMAP('{{', '{{', 'tex')
call IMAP('((', '((', 'tex')
call IMAP('[[', '[[', 'tex')
call IMAP('$$', '$$', 'tex')

Answer 2

I put let g:Imap_FreezeImap=1 in my .vimrc. It should disable all of this annoying “magic”.

Answer 3

The Latex-Suite Reference states in chapter 3 Latex-Suite Macros in section Over-riding Latex-Suite Macros:

To delete a mapping, you can use
call IUNMAP('FEM', 'tex')
in ~/.vim/after/ftplugin/tex_macros.vim.

For example

call IUNMAP('{}', 'tex')

will unmap expansion when typing {}.

---

^{The IUNMAP command was added Wed Dec 28 21:57:54 2016 +0100}

Answer 4

It should really not be the case, that the tex mappings are enabled for all files. So either you need to update your vim-latex or change a configuration option there.

I had the same problem with expansion like [[ ~> \left[ <++> \right]<++>. It always took to long to undo any errors, because normal undo will remove too much. So I found that you can insert undo marks with ^Gu (literal Ctrl-G u) before the replacement. This way whenever I type [[ by mistake or even want a literal [[, I just press the <undo> key and then only the [[ is left.

See also my question on SO, where I asked for the way to get the <undo> key in insert mode.

To automatically insert the undo mark, you need to change the imap.vim file of vim-latex and at the end of the LookupCharacter function, change the return line to

return a:char . "^Gu\<bs>" . bs . IMAP_PutTextWithMovement(rhs, phs, phe)

Notice that in order to write ^G you have to type Ctrl-V Ctrl-G, only copy-paste will not suffice here.

I send this change as a suggestion to the vim-latex mailing list, but unfortunately there doesn't seem to be an active maintainer...