restore is_sourced()BASH_SOURCE[0] back to unquoted.
Force it to integer mode for integer comparison because string comparison failed when leading zero appears during new pre-analysis for non-COLORFGBG/older VTE library.
Added linux TERM to the same logic as xterm*, gnome, and rxvt* TERMs.
is_sourced()
BASH_SOURCE[0]
back to unquoted.linux
TERM to the same logic asxterm*
,gnome
, andrxvt*
TERMs.