The new function at the end of src/update.bat, namely
:copySvgFiles - create a directory and copy avg files to it
setlocal
echo Copy svg files from %~1 to %~1
call:mkdirSilent %~2\svg
xcopy /D /y %~1\svg\*.svg %~2\svg > nul
endlocal
GOTO:EOF
would seem to have a typo in the echo line, perhaps it should be:
echo Copy svg files from %~1 to %~2