The following might be slightly better (and this handles '@-@',
but I still haven't read all the docs to see if there is
anything else needed; testing needed!):
function! ShowChars(spec)
let result = []
for item in split(a:spec, ',')
if len(item) > 1
if item == '@-@'
call add(result, char2nr(item))
else
call extend(result, call('range', split(item, '-')))
endif
else
if item == '@' " assume this is [A-Za-z]
for [c1, c2] in [['A', 'Z'], ['a', 'z']]
call extend(result, range(char2nr(c1), char2nr(c2)))
endfor
else
call add(result, char2nr(item))
endif
endif
endfor
return join(map(result, 'nr2char(v:val)'), ', ')
endfunction
John
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