问题就是我们使用TextMate不支持GB2312等编码，用着及其不方便，下面是解决方案：
打开Bundle Editor
选则Show all
选则文件夹TextMate（或者随便你选则什么）
增加一个新的template‘openEncodedFile’（或者随便你自己命名）
在Template data中如下设定
Extension：中 留空
Command(s):
# open CocoaDialog’s file select menu
file=$(CocoaDialog fileselect \
--title "Open an encoded file" \
--with-directory $HOME/ \
)
# check for valid file
if [ -n "$file" ]; then
# open CocoaDialog's dropdown menu
# for more encodings add them to '--items'
# to list all possibile encodings use the Terminal with 'iconv -l'
res=$(CocoaDialog dropdown \
--title "Open an encoded file" \
--text "Choose the encoding:" \
??exit?onchange \
--button1 "Open" \
--button2 "Cancel" \
--items "BIG5" "EUC-TW" "GB2312" "SJIS" "EUC-JP" "KOI8-R" \
)
# if user canceled exit
[[ $( (tail -r <<<"$res") | tail -n1) == "2" ]] && \
exit_discard
res=$(tail -n1 <<<"$res")
# add more 'elif' according to '--items' if needed
if [ "$res" == 0 ]; then
ENC="BIG5"
elif [ "$res" == 1 ]; then
ENC="EUC-TW"
elif [ "$res" == 2 ]; then
ENC="GB2312"
elif [ "$res" == 3 ]; then
ENC="SJIS"
elif [ "$res" == 4 ]; then
ENC="EUC-JP"
elif [ "$res" == 5 ]; then
ENC="KOI8-R"
fi
# start conversion to UTF-8 and send the result as a new file back to TM
iconv -f "$ENC" -t utf-8 "$file" > "$TM_NEW_FILE"
fi
Output: Insert as Text - Activation: Key Equivalent shift+option+o (我的建议) - Scope: 留空
