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Jump to previous/next math zone #1818

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Jump to previous/next math zone #1818

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52ccf54
Added support to jump backward and forward to math zones.
Oct 5, 2020
e548663
Can also jump back to the end of math zones defined $, $$, \(...\) an…
Oct 5, 2020
9c7370d
Delimiter is two character wide, so we need to check two characters back
Oct 5, 2020
0e0ea6f
Fixed typo
Oct 5, 2020
b842e13
First check for mathzone for previous position, to prevent the openin…
Oct 5, 2020
4a1407e
Simplified
Oct 5, 2020
b9f0a6e
Incorporated lervag's suggestions.
Oct 7, 2020
69eabd8
Added visual and operator pending mode mappings
Oct 7, 2020
c3f5bc2
Fixed minor formatting issues as suggested by lervag.
Oct 8, 2020
3a63a11
<plug> --> <sid>
Oct 8, 2020
4717878
Handle edge cases
Oct 8, 2020
b0c8ea0
Added math motions tests
navdeeprana Oct 8, 2020
f52c2c6
Cleanup to fit in 80 characters.
Oct 8, 2020
ea18f0e
Fixed test.
Oct 9, 2020
b369142
Added math motion in the feature list.
Oct 9, 2020
94c43a1
Added math motion in the feature list.
Oct 9, 2020
0909907
Added math motion in the default map list and map definitions.
Oct 9, 2020
69e481b
Fixed minor formatting issues
Oct 9, 2020
78ef532
Wrap the math regex groups into a super group, so that the not_commen…
Oct 9, 2020
2abf4a6
Fix unexpected behavior which might arise while using motion with count.
Oct 9, 2020
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5 changes: 5 additions & 0 deletions autoload/vimtex.vim
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Original file line number Diff line number Diff line change
Expand Up @@ -205,6 +205,11 @@ function! s:init_default_mappings() abort " {{{1
call s:map(1, 'o', ']*', '<plug>(vimtex-]*)')
call s:map(1, 'o', '[/', '<plug>(vimtex-[/)')
call s:map(1, 'o', '[*', '<plug>(vimtex-[*)')

call s:map(1, 'n', ']N', '<plug>(vimtex-]N)')
call s:map(1, 'n', ']n', '<plug>(vimtex-]n)')
call s:map(1, 'n', '[N', '<plug>(vimtex-[N)')
call s:map(1, 'n', '[n', '<plug>(vimtex-[n)')
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endif

if g:vimtex_text_obj_enabled
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45 changes: 45 additions & 0 deletions autoload/vimtex/motion.vim
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Expand Up @@ -82,6 +82,12 @@ function! vimtex#motion#init_buffer() abort " {{{1
\ :execute "normal \<sid>(V)" . v:count1 . "\<sid>(vimtex-[/)"<cr>
onoremap <silent><buffer> <plug>(vimtex-[*)
\ :execute "normal \<sid>(V)" . v:count1 . "\<sid>(vimtex-[*)"<cr>

" Math
nnoremap <silent><buffer> <plug>(vimtex-]n) :<c-u>call vimtex#motion#math(1,0,0)<cr>
nnoremap <silent><buffer> <plug>(vimtex-]N) :<c-u>call vimtex#motion#math(0,0,0)<cr>
nnoremap <silent><buffer> <plug>(vimtex-[n) :<c-u>call vimtex#motion#math(1,1,0)<cr>
nnoremap <silent><buffer> <plug>(vimtex-[N) :<c-u>call vimtex#motion#math(0,1,0)<cr>
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endfunction

" }}}1
Expand Down Expand Up @@ -194,6 +200,45 @@ function! vimtex#motion#comment(begin, backwards, visual) abort " {{{1
endfunction

" }}}1
function! vimtex#motion#math(begin, backwards, visual) abort " {{{1
" Save cursor position first (and restore it on errors)
let l:curpos_saved = vimtex#pos#get_cursor()

let l:count = v:count1
if a:visual
normal! gv
endif

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" Search for $, $$, \[, \(, \begin
" Use syntax to determine if we are inside math region
let l:re = g:vimtex#re#not_comment . (a:begin ? '%(\${1,2}|\\\[|\\\(|\\begin\s*\{)' : '%(\${1,2}|\\\]|\\\)|\\end\s*\{)')
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let l:flags = 'W' . (a:backwards ? 'b' : '')

for l:_ in range(l:count)
" Ensure we are not going into infinite loop
let l:iter = 0

" We need to restore cursor back to it's original position if jumping
" to count number of math environments fail.
let l:restore_cursor = 1
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while l:iter <= 5
let l:iter += 1
call search(l:re, l:flags)
let l:pos = vimtex#pos#get_cursor()
if a:begin == 0
let l:pos = vimtex#pos#prev(l:pos[1],l:pos[2]-1)
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endif
if vimtex#syntax#in_mathzone(l:pos[1],l:pos[2],l:pos[3])
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let l:restore_cursor = 0
break
endif
endwhile
endfor
" Restore cursor position if fail
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if l:restore_cursor
call vimtex#pos#set_cursor(l:curpos_saved)
endif
endfunction


" Patterns to match section/chapter/...
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