color: for the sake of "less -R", default to ansi in auto mode (
issue2792)
less with the -R option only supports ANSI color codes, and terminfo
mode issue non-ANSI color codes (depending on the database). The -r
option can work around this, but there are users currently using the
-R option, and defaulting to terminfo would break colorization in less
for them without warning.
color: fix TypeError with auto mode on win32 when colors aren't available (
issue2871)
This can happen when stdout isn't a terminal (e.g., it's being piped).