請問如何爲半角符號添加註釋

[Reniastyc]

以預設的symbol中的半角頓號爲例，預設的情形並沒有添加半角註釋，而在有些字體下半角頓號與全角頓號難以區分，請問有無方法主動爲其添加〔半角〕註釋呢？

[lotem]

沒有專門做這項功能。 有人用編碼提示加拼寫運算迂迴實現，做法極其複雜。

[Reniastyc]

使用Lua腳本實現了這一功能，代碼如下：

local full_sym = {
    "，", "。", "、", "・", "｜", "／", "＼", "［", "］", "～", "｛", "｝"
}

local full_com = "〔全角〕"

local half_sym = {
    ",", ".", "､", "·", "|", "/", "\\", "[", "]", "~", "{", "}"
}

local half_com = "〔半角〕"

local function table_include_value(loc_table, loc_value)
    for _, loop_value in pairs(loc_table) do
        if loop_value == loc_value then
            return true
        end
    end
    return false
end

local function filter(input)
    for cand in input:iter() do
        local str = cand.text
        if utf8.len(str) == 1 then
            if table_include_value(full_sym, str) then
                cand:get_genuine().comment = full_com
            elseif table_include_value(half_sym, str) then
                cand:get_genuine().comment = half_com
            end
        end
        yield(cand)
    end
end

return filter

思路就是在候選項僅一位時對表，利用Filter修改註釋

[Reniastyc]

效果大致就是這樣

[shewer]

用 [[ ]] 和 match

-- lua_filter
local full_sym= [[＇"，<．>；:＋－／＝＿！＠＃＄％＾＆＊（）［］｛｝＼]]
local half_sym= [[''",<.>;:+-/=_!@#$%^&*()[]{}\]]
local full_com = "〔全角〕"
local half_com = "〔半角〕"

function M.func(inp,env)
  for cand in inp:iter() do
    local comment = (full_sym:match( cand.text) and full_com)
         or (half_sym:match(cand.text) and half_com)
    if comment then 
        cand.comment = cand.comment .. comment 
    end
    yield(cand)
 end
end

return M