Applescript 在 Big Sur 莫名其妙地失败了

Question

我一直在使用 TextExpander 来运行这个脚本，它最近在更新到 Big Sur 后开始失败。 认为它与 TextExpander 有关，我创建了一个类似的快捷方式来在 BetterTouchTool 中运行它，但遇到了同样的问题。 它不会抛出明显的错误，它只是在完成时播放错误音，并且不会 output 任何东西。 奇怪的是，当我从脚本编辑器运行它时，它执行得很好。 只有当它被另一个进程调用时它才会失败。

该脚本的基本思想是在对话框中输入原始数字，并在最前面的应用程序中输入 output 格式的时间码。 例如，输入“207”输出“01:00:02:07”

我已经搜索了代码并且找不到可能导致错误的原因，因为它都是非常基本的文本操作。 任何想法都会有很大帮助。

tell application "System Events"
--Set process that called text expander aside so it can be returned to the front
set frontProcessName to name of item 1 of (processes whose frontmost is true)

-- Get the raw numbers from the user
set raw_timecode to text returned of (display dialog "Timecode" default answer "")

-- Set the default variables
set user_timecode to "" as string
set rt_length to the length of raw_timecode

--Check to see if the TC field is blank
if raw_timecode = "" then
    set raw_timecode to "01000000"
end if

--Parse the user supplied numbers and replace any "." with "00"
repeat with n from 1 to rt_length
    if character n of raw_timecode = "." then
        set user_timecode to user_timecode & "00" as text
    else
        set user_timecode to user_timecode & character n of raw_timecode as text
    end if
    
end repeat

--Set to 00:00:00:00 if only digit is 0 
if user_timecode = "0" then
    set base_timecode to "00000000"
else
    set base_timecode to "01000000"
end if

set x to the length of user_timecode


-- Trim extra digits off base timecode
if x = 8 and user_timecode ≠ "0" then
    set raw_timecode to user_timecode as string
else
    repeat while (length of base_timecode) + (length of user_timecode) > 8
        try
            set base_timecode to characters 1 thru -(x + 1) of base_timecode as string
            set raw_timecode to base_timecode & user_timecode as string
        on error
            display dialog "Invalid timecode"
            error number -128
        end try
    end repeat
end if
set new_timecode to characters 1 thru 2 of raw_timecode & ":" & characters 3 thru 4 of raw_timecode & ":" & characters 5 thru 6 of raw_timecode & ":" & characters 7 thru 8 of raw_timecode as text

end tell

-- Return the previous app that called text expander to the front
tell application frontProcessName to activate
delay 0.5

return new_timecode