Just a PSA. From the xschem documentation page 260, you can use the syntax

vtrip[7..0]

to expand to

vtrip7,vtrip6,vtrip5,vtrip4,vtrip3,vtrip2,vtrip1,vtrip0

with no brackets). Might save you some keystrokes. (Note:

vtrip[7:0]

to expands to

vtrip[7],vtrip[6],vtrip[5],vtrip[4],vtrip[3],vtrip[2],vtrip[1],vtrip[0]

with brackets).