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function! CharAtIdx(str, idx) abort
return strcharpart(a:str, a:idx, 1)
endfunction
function! CursorCharIdx() abort
let cursor_byte_idx = col('.')
if cursor_byte_idx == 1
return 0
endif
let pre_cursor_text = getline('.')[:col('.')-2]
return strchars(pre_cursor_text)
endfunction
function brackify#putbracket(bracket)
let cur_char_idx = CursorCharIdx()
let cur_char = CharAtIdx(getline('.'), cur_char_idx + 1)
if cur_char != a:bracket
let line = getline('.')[:col('.') - 1] . a:bracket . getline('.')[col('.'):]
call setline(line("."), line)
endif
endfunction
function brackify#putquotes(quote)
let cur_char_idx = CursorCharIdx()
let cur_char = CharAtIdx(getline('.'), cur_char_idx + 1)
if cur_char != a:quote
let line = getline('.')[:col('.') - 1] . a:quote . a:quote . getline('.')[col('.'):]
call setline(line("."), line)
if col('.') > 1
call cursor(getpos('.')[1], col('.') + 1)
endif
else
call cursor(getpos('.')[1], col('.') + 1)
endif
endfunction
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