Xpra: Ticket #1930: --attach=yes fails with -z0

The --attach=yes option will fail to start the client if the --compress=0 option is used.

For example xpra start --attach=yes --start=xterm --daemon=no -z0 will produce:

xpra initialization error:
 no such option: --compression_level

Mon, 06 Aug 2018 16:11:03 GMT - Antoine Martin: status changed; resolution, milestone set

status changed from new to closed
resolution set to fixed
milestone set to 2.4

Preface: unless your setup is very unusual (ie: a very low power CPU, or your installation is missing the lz4 compressor), then setting compression to zero will do absolutely nothing.

Fixes:

r20050: support more command line option aliases for compression level
r20051: rewrite command line arguments when generating command lines for servers potentially older then the current version (ie: via ssh)

r20051 also includes a fix for an unintended variable name shadowing bug

Sat, 23 Jan 2021 05:37:36 GMT - migration script:

this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/1930