Stop outputing ANSI color on non-TTY

[ribasushi]

No more stuff like: https://circleci.com/gh/filecoin-project/lotus/189136

[jburnett]

I'm not sure it this is the same issue, but up-voting if it is. When we want to watch sectors list, we use

watch --interval -600 "lotus-miner sectors list --color false| grep -v Proving"

which results in

ID   State                  OnChain  Active  Expiration                      Deals  DealWeight  VerifiedPower
19   ^[36mTerminateFailed^[0m        ^[31mNO^[0m       ^[31mNO^[0m      n/a                             ^[34mCC^[0m
51   ^[36mTerminateFailed^[0m        ^[31mNO^[0m       ^[31mNO^[0m      n/a                             ^[34mCC^[0m
159  ^[36mTerminateWait^[0m          ^[32mYES^[0m      ^[31mNO^[0m      2414219 (in 1 year 22 weeks)    ^[34mCC^[0m
179  ^[33mFinalizeSector^[0m         ^[32mYES^[0m      ^[31mNO^[0m      2448779 (in 1 year 24 weeks)    ^[34mCC^[0m
180  ^[33mFinalizeSector^[0m         ^[32mYES^[0m      ^[31mNO^[0m      2448779 (in 1 year 24 weeks)    ^[34mCC^[0m
187  ^[33mCommitting^[0m             ^[31mNO^[0m       ^[31mNO^[0m      n/a                             ^[34mCC^[0m
189  ^[33mSubmitCommitAggregate^[0m  ^[31mNO^[0m       ^[31mNO^[0m      n/a                             ^[34mCC^[0m
190  ^[33mPreCommit1^[0m             ^[31mNO^[0m       ^[31mNO^[0m      n/a                             ^[34mCC^[0m
191  ^[33mPreCommit1^[0m             ^[31mNO^[0m       ^[31mNO^[0m      n/a                             ^[32m1^[0m

We've tried variations of color flag to remove the color/control chars. HTH

[ribasushi]

@jburnett no, that is a slightly different. An immediate workaround for you is to do:

lotus-miner sectors list --color=false

instead of your

lotus-miner sectors list --color false

( I suspect this is a urfavecli bug )

In any case - this is somewhat obnoxious so I opened a separate #6696