161 lines
5.6 KiB
VimL
161 lines
5.6 KiB
VimL
" ==============================================================================
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" Author: Carl Mueller
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" (incorporated into latex-suite by Srinath Avadhanula)
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" Last Change: Tue Dec 31 11:00 AM 2002 PST
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" Description:
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" This ftplugin provides the following maps:
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" . <M-b> encloses the previous character in \mathbf{}
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" . <M-c> is polymorphic as follows:
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" Insert mode:
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" 1. If the previous character is a letter or number, then capitalize it and
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" enclose it in \mathcal{}
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" 2. otherwise insert \cite{}
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" Visual Mode:
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" 1. Enclose selection in \mathcal{}
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" . <M-l> is also polymorphic as follows:
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" If the character before typing <M-l> is one of '([{|<q', then do the
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" following:
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" 1. (<M-l> \left(\right
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" similarly for [, |
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" {<M-l> \left\{\right\}
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" 2. <<M-l> \langle\rangle
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" 3. q<M-l> \lefteqn{}
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" otherwise insert \label{}
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"
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" These functions make it extremeley easy to do all the \left \right stuff in
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" latex.
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"
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" NOTE: The insert mode maps are created only if maps are no maps already to
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" the relevant functions Tex_MathBF, Tex_MathCal and Tex_LeftRight. This is to
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" enable people who might need the alt keys for typing to use some other
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" keypress to trigger the same behavior. In order to use some other key, (say
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" <C-c>) to use Tex_MathCal(), do the following
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"
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" inoremap <buffer> <silent> <C-c> <C-r>=Tex_MathCal()<CR>
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"
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" ==============================================================================
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" Avoid reinclusion.
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if exists('b:did_brackets')
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finish
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endif
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let b:did_brackets = 1
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" ==============================================================================
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" Insert mode mappings
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" All the insert mode mappings check to see if the function they are creating
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" the map for already exists in the rhs of some map.
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" ==============================================================================
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" {{{
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" Provide <plug>'d mapping for easy user customization.
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"
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inoremap <silent> <Plug>Tex_MathBF <C-r>=Tex_MathBF()<CR>
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inoremap <silent> <Plug>Tex_MathCal <C-r>=Tex_MathCal()<CR>
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inoremap <silent> <Plug>Tex_LeftRight <C-r>=Tex_LeftRight()<CR>
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" Provide mappings only if the user hasn't provided a map already or if the
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" target lhs doesn't have a mapping.
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" TODO: These will be removed in future revisions. Alt mappings are a headache
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" for European users...
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if !hasmapto('<Plug>Tex_MathBF', 'i') && mapcheck('<M-b>', 'i') == ''
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imap <buffer> <silent> <M-b> <Plug>Tex_MathBF
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endif
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if !hasmapto('<Plug>Tex_MathCal', 'i') && mapcheck('<M-c>', 'i') == ''
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imap <buffer> <silent> <M-c> <Plug>Tex_MathCal
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endif
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if !hasmapto('<Plug>Tex_LeftRight', 'i') && mapcheck('<M-l>', 'i') == ''
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imap <buffer> <silent> <M-l> <Plug>Tex_LeftRight
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endif
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" }}}
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" ==============================================================================
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" Visual/Normal Mode mappings.
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" ==============================================================================
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" {{{
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vnoremap <buffer> <silent> <M-b> <C-C>`>a}<Esc>`<i\mathbf{<Esc>
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vnoremap <buffer> <silent> <M-c> <C-C>`>a}<Esc>`<i\mathcal{<Esc>
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nnoremap <buffer> <silent> <M-l> :call <SID>PutLeftRight()<CR>
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" }}}
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" ==============================================================================
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" Function definitions
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" ==============================================================================
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" define the funtions only once.
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if exists('*Tex_MathBF')
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finish
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endif
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" Tex_MathBF: encloses te previous letter/number in \mathbf{} {{{
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" Description:
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function! Tex_MathBF()
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return "\<Left>\\mathbf{\<Right>}\<Esc>hvUla"
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endfunction " }}}
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" Tex_MathCal: enclose the previous letter/number in \mathcal {{{
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" Description:
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" if the last character is not a letter/number, then insert \cite{}
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function! Tex_MathCal()
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let line = getline(line("."))
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let char = line[col(".")-2]
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if char =~ '[a-zA-Z0-9]'
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return "\<BS>".'\mathcal{'.toupper(char).'}'
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else
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return IMAP_PutTextWithMovement('\cite{<++>}<++>')
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endif
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endfunction
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" }}}
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" Tex_LeftRight: maps <M-l> in insert mode. {{{
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" Description:
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" This is a polymorphic function, which maps the behaviour of <M-l> in the
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" following way:
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" If the character before typing <M-l> is one of '([{|<q', then do the
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" following:
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" 1. (<M-l> \left(<++>\right<++>
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" similarly for [, |
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" {<M-l> \left\{<++>\right\}<++>
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" 2. <<M-l> \langle<++>\rangle<++>
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" 3. q<M-l> \lefteqn{<++>}<++>
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" otherwise insert \label{<++>}<++>
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function! Tex_LeftRight()
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let line = getline(line("."))
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let char = line[col(".")-2]
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let previous = line[col(".")-3]
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let matchedbrackets = '()[]{}||'
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if char =~ '(\|\[\|{\||'
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let add = ''
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if char =~ '{'
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let add = "\\"
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endif
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let rhs = matchstr(matchedbrackets, char.'\zs.\ze')
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return "\<BS>".IMAP_PutTextWithMovement('\left'.add.char.'<++>\right'.add.rhs.'<++>')
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elseif char == '<'
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return "\<BS>".IMAP_PutTextWithMovement('langle<++>\rangle<++>')
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elseif char == 'q'
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return "\<BS>".IMAP_PutTextWithMovement('\lefteqn{<++>}<++>')
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else
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return IMAP_PutTextWithMovement('\label{<++>}<++>')
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endif
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endfunction " }}}
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" Tex_PutLeftRight: maps <M-l> in normal mode {{{
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" Description:
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" Put \left...\right in front of the matched brackets.
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function! Tex_PutLeftRight()
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let previous = getline(line("."))[col(".") - 2]
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let char = getline(line("."))[col(".") - 1]
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if previous == '\'
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if char == '{'
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exe "normal ileft\\\<Esc>l%iright\\\<Esc>l%"
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elseif char == '}'
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exe "normal iright\\\<Esc>l%ileft\\\<Esc>l%"
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endif
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elseif char =~ '\[\|('
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exe "normal i\\left\<Esc>l%i\\right\<Esc>l%"
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elseif char =~ '\]\|)'
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exe "normal i\\right\<Esc>l%i\\left\<Esc>l%"
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endif
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endfunction " }}}
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" vim:fdm=marker
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