いろんなフォントで「function_call」変換
Zen Old Minchofunction_call
Yusei Magicfunction_call
M PLUS 1function_call
Shippori Antiquefunction_call
Yuji Maifunction_call
Dela Gothic Onefunction_call
DotGothic16function_call
Train Onefunction_call
Hira Minchofunction_call
Potta Onefunction_call
Reggae Onefunction_call
Stickfunction_call
Zen Kurenaidofunction_call
Kosugi Marufunction_call
Rampart Onefunction_call
Hachi Maru Popfunction_call
New Tegominfunction_call
RocknRoll Onefunction_call
Kaisei Decolfunction_call
「function_call」をコピペできる装飾文字に変換（旧字体・丸囲みなど）
