feat: add optional colorized output support#1223
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Add ros2cli/color.py with an extensible colorizer framework that wraps sys.stdout and applies ANSI colors line-by-line. Colorizers are registered per (command, verb) pair; unregistered commands fall back to DefaultColorizer. Colorized output is activated when ROS_COLORIZED_OUTPUT=1 and stdout is a TTY, or via the new --color CLI flag. Signed-off-by: Peng Wang <penwang@qti.qualcomm.com>
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Description
Fixes #1222
Add ros2cli/color.py with an extensible colorizer framework that wraps sys.stdout and applies ANSI colors line-by-line. Colorizers are registered per (command, verb) pair; unregistered commands fall back to DefaultColorizer.
Colorized output is activated when ROS_COLORIZED_OUTPUT=1 and stdout is a TTY, or via the new --color CLI flag.
Is this user-facing behavior change?
No.
--coloris not passed andROS_COLORIZED_OUTPUTis unset.Did you use Generative AI?
Yes, partially with Claude Sonnet 4.6
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