Construction 'if ... else' with 'try' throws an "Unexpected Else" error

[xIrbis]

V1 Process, Exist, notepad.exe if !ErrorLevel try Run notepad.exe else MsgBox Process Notepad.exe already exists! Return

V2 ErrorLevel := ProcessExist("notepad.exe") if !ErrorLevel try Run("notepad.exe") else MsgBox("Process Notepad.exe already exists!") Return

The variant without "TRY" (just Run(..) ) works correctly, but it is necessary in my working script. If you manually add parentheses, this also works.

V2 ErrorLevel := ProcessExist("notepad.exe") if !ErrorLevel { try Run("notepad.exe") } else MsgBox("Process Notepad.exe already exists!") Return

[dmtr99]

Indeed a strange error, thanks for reporting. Strange that V2 displays now an error.

[mmikeww]

Its because the else is paired to the try, not paired to the if

see here: https://www.autohotkey.com/boards/viewtopic.php?f=37&t=114516

for some reason, v2 allows 'try' to have an 'else'. here's how the parser sees the code:

ErrorLevel := ProcessExist("notepad.exe")
if !ErrorLevel
   try
      Run("notepad.exe")
   else
      MsgBox("try didnt throw exception")
Return

solution, use braces

[slycordinator]

It also seems that you could shorten the code to remove the ErrorLevel variable, though the converter script doesn't seem to do such refactoring.

You should be able to use: if ProcessExist("notepad.exe") try Run("notepad.exe")

or if ProcessExist("notepad.exe") { try Run("notepad.exe") }