Eric Fried 9a0c2bd531 Default LOG_COLOR based on interactive execution ...

Change I4a10a49db97d413349bcfceeb8c4164936fbcc40 added colorful PS4 via
tput.  However, if TERM is not set (as is the case when stacking
noninteractively), tput errors with the following:

tput: No value for $TERM and no -T specified

...twice for every log message, thus flooding the logs.

This change set turns LOG_COLOR off by default for noninteractive
execution.  If LOG_COLOR is set to True when noninteractive (TERM is
unset), obviate the above errors by passing tput a simple -T.

Change-Id: I0f8ad82375cde463160bad5bd9918f1e4b19326d
Closes-Bug: 1576405

2016-06-17 14:39:18 -05:00

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