- 1 year ago
Windows batch file: GOTO, DELAYEDEXPANSION issue
In Windows batch files, using GOTO
and DELAYEDEXPANSION
together can sometimes cause issues. This is because DELAYEDEXPANSION
can interfere with the evaluation of GOTO
labels and variables.
To resolve this issue, you can disable DELAYEDEXPANSION
temporarily while using GOTO
and enable it again afterward. Here's an example:
batch@echo off
setlocal enabledelayedexpansion
REM Your batch file code here
REM Disable DELAYEDEXPANSION
setlocal disabledelayedexpansion
REM GOTO label
goto mylabel
:mylabel
REM Enable DELAYEDEXPANSION again
endlocal
REM Rest of your batch file code
In this example, setlocal enabledelayedexpansion
enables DELAYEDEXPANSION
at the beginning of the script. When you want to use GOTO
, you first disable DELAYEDEXPANSION
using setlocal disabledelayedexpansion
. Then, you can use GOTO
to jump to a label. Afterward, you enable DELAYEDEXPANSION
again using endlocal
.
By disabling and enabling DELAYEDEXPANSION
around the GOTO
statement, you can avoid any potential issues caused by the interaction between GOTO
and DELAYEDEXPANSION
.
Please note that using GOTO
and DELAYEDEXPANSION
in the same batch file should be done with caution, as it can introduce complexities and potential issues. It is generally recommended to minimize the use of GOTO
and consider alternative flow control mechanisms if possible.