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" Search for digraphs
function! digraph_search#Search() abort
" Get the search string
let l:search = input('Digraph search: ')
if !strlen(l:search)
return
endif
" Look for the uppercased search in the table
let l:results = []
for l:digraph in digraph_search#Digraphs()
if stridx(l:digraph['name'], toupper(l:search)) != -1
call add(l:results, l:digraph)
endif
endfor
" Print results, or if there weren't any, say so
redraw
echo 'Digraphs matching '.toupper(l:search).':'
if len(l:results)
for l:result in l:results
echo l:result['char']
\.' '.l:result['keys']
\.' '.l:result['name']
endfor
else
echo 'None!'
endif
endfunction
" Get private memoized list of digraph dictionary objects
function! digraph_search#Digraphs() abort
" We haven't been called yet; get the digraph list
if !exists('s:digraphs')
let s:digraphs = []
let l:table = 0
for l:line in readfile($VIMRUNTIME.'/doc/digraph.txt')
" Flag whether we're in one of the digraph tables; look for the heading
let l:table = l:table && strlen(l:line)
\ || l:line =~# '\C\*digraph-table\%(-mbyte\)\=\*$'
" Skip to next line if not in a table
if !l:table
continue
endif
" Check whether this row matches a parseable digraph row
let l:match = matchlist(l:line,
\ '^\(\S\)\+\s\+'
\ . '\(\S\S\)\s\+'
\ . '\%(0x\)\=\x\+\s\+'
\ . '\d\+\s\+'
\ . '\(.\+\)'
\ )
" Skip to next line if not a table row match
if !len(l:match)
continue
endif
" Add to the digraphs list; key is digraph, value is full name
call add(s:digraphs, {
\ 'char': l:match[1],
\ 'keys': l:match[2],
\ 'name': l:match[3],
\ })
endfor
endif
" Return the list, whether newly-generated or from the first call
return s:digraphs
endfunction
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