Cannot set JVM flags via SBT_OPTS

[piotrp]

Wrapper incorrectly parses SBT_OPTS - behavior differs from sbt launcher.

Wrapper appends all arguments to sbt:

$ echo $SBT_OPTS
-Xmx4g

$ ./sbtwrapper -v
Using sbt options defined in variable $SBT_OPTS
No extra sbt options have been defined
[residual] arg = '-Xmx4g'
Detected sbt version 1.9.6
Using default jvm options
Detected Java version: 11
# Executing command line:
java
-Xms512m
-Xss2m
-XX:MaxInlineLevel=18
-XX:+UnlockExperimentalVMOptions
-XX:+UseJVMCICompiler
-jar
/c/Users/ppr/.sbt/launchers/1.9.6/sbt-launch.jar
-Xmx4g
...
[error] Expected symbol
[error] Not a valid command: -
[error] Expected end of input.
[error] Expected '--'
[error] Expected 'debug'
[error] Expected 'info'
[error] Expected 'warn'
[error] Expected 'error'
[error] Expected 'addPluginSbtFile'
[error] -Xmx4g
[error]  ^

sbt moves JVM arguments into correct spot:

$ echo $SBT_OPTS
-Xmx4g

$ sbt -v
[sbt_options] declare -a sbt_options=([0]="-Xmx4g")
[process_args] java_version = '11'
[copyRt] java9_rt = 'C:\Users\ppr\.sbt\1.0\java9-rt-ext-eclipse_adoptium_11_0_20/rt.jar'
# Executing command line:
java
-Dfile.encoding=UTF-8
-Dsbt.script=/c/sbt/bin/sbt
-Dscala.ext.dirs=C:\Users\ppr\.sbt\1.0\java9-rt-ext-eclipse_adoptium_11_0_20
-Djline.terminal=jline.UnixTerminal
-Dsbt.cygwin=true
-Xmx4g
-jar
C:\sbt\bin\sbt-launch.jar