/usr/bin/source-highlight-esc.sh is in source-highlight 3.1.7-1+b1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | #!/bin/bash
# Detect how many colors the terminal supports so source-highlight can
# output in 256.
# Copyright 2012 Xavier-Emmanuel VINCENT
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
colors=$(tput colors)
# /dev/tty doesn't support 256 colors => check $DISPLAY
if [ "${colors}" -eq 256 -a -n "${DISPLAY}" ]
then
NB="256"
else
NB=""
fi
source-highlight --outlang-def=esc${NB}.outlang --style-file=esc${NB}.style -i "$@"
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