I'm using a vsdiff command like this to do a multi-file diff that excludes some hidden files, backup files, .SYNC folders.
This command worked on V18:
vsdiff -x '.*;*~;#*;.SYNC/' /tmp/ryanw.sldiff.24421/ $STX_COMLIB/
However, I have to use the following on V19:
vsdiff -wc '' -x '.*;*~;#*' -x'.SYNC/' /tmp/ryanw.sldiff.24421/ $STX_COMLIB/
Two things here:
On V18, the -wc wasn't required to engage multi-file diff. On V19, if you don't use -wc it does single file diff regardless of what you passed to it.
On V18, the -x option would accept file patterns and directory patterns in a single option. In V19, I have to separate the excluded directory from the excluded file patterns.