Using a Windows BAT file doesn't change anything compared to running the command at the command prompt without a BAT file.
What do you mean be "re-verify"?
What version of the Spine launcher are you using? The latest will works best, current 4.2.01. The version number is on the first line of the CLI output, eg Spine Launcher 4.2.01.
You can speed up your exports by combining multiple in one Spine execution. For example:
Spine --export /path/to/export.json --export "/path/with spaces/to/export.json" --input /path/to/project.spine --output /path/to/output/ --export /path/to/export.json
This is faster because Spine only has to initialize once, then do the work. The CLI parameters are input/output/etc then command and you can have as many sets of those as you like.
In a BAT file you can use ^ at the end of the line to make your script more readable:
Spine --export /path/to/export.json ^
--export "/path/with spaces/to/export.json" ^
--input /path/to/project.spine --output /path/to/output/ ^
--export /path/to/export.json
FWIW, I find it more comfortable to use Cygwin and Bash scripts. Windows batch scripting is very cryptic. Bash too, but it's easier to be productive. Another way to use Bash scripts is by using "Git Bash" which comes with "Git for Windows. We are working on a blog post that will cover how to automate exports using both BAT and Bash scripts.
