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tty: improve tty color detection #19730

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@BridgeAR BridgeAR commented Apr 1, 2018

This moves the getColorDepth function to the new internal/tty file. This is important to properly give attributions to @sindresorhus.

I also improved the detection by adding new values that should be checked. I am currently playing around with ncurses has_colors function. It does seem to work fine, I am just not sure where I should expose the function and how this should work on e.g. Windows. Somewhat similar: tput colors. Adding that would allow to detect simple color support. A couple of the terminals that support colors actually support more colors than currently returned, but I did not yet find a good way to always detect the version (as I have to install the terminal etc...). If anyone has a idea how to detect color support without checking environment variables: please let me know. printf and read can be used in combination, I am just not sure how to make use of that information for Node.js.

This definitely needs a backport to 9.x.

Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • tests and/or benchmarks are included
  • documentation is changed or added
  • commit message follows commit guidelines

This adds attributions for the getColorDepth function as it got
inspired by https://github.com/chalk/supports-color and more sources.
This adds support for a couple more terminals.
@BridgeAR BridgeAR requested review from MylesBorins and a team April 1, 2018 17:39
@nodejs-github-bot nodejs-github-bot added build Issues and PRs related to build files or the CI. tty Issues and PRs related to the tty subsystem. labels Apr 1, 2018
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BridgeAR commented Apr 1, 2018

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@addaleax addaleax left a comment

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Seems fine to me, if @sindresorhus is okay with it too.

Also, fyi: http://no-color.org/

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BridgeAR commented Apr 1, 2018

@addaleax I actually know that site, I just did not come up with the idea to use the information properly. So thanks a lot 👍

@BridgeAR BridgeAR added the author ready PRs that have at least one approval, no pending requests for changes, and a CI started. label Apr 2, 2018
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LGTM

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BridgeAR commented Apr 4, 2018

Landed in 1b71522, ceaeee0.

@BridgeAR BridgeAR closed this Apr 4, 2018
BridgeAR added a commit to BridgeAR/node that referenced this pull request Apr 4, 2018
This adds attributions for the getColorDepth function as it got
inspired by https://github.com/chalk/supports-color and more sources.

PR-URL: nodejs#19730
Reviewed-By: Anna Henningsen <[email protected]>
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: Matteo Collina <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Trivikram Kamat <[email protected]>
BridgeAR added a commit to BridgeAR/node that referenced this pull request Apr 4, 2018
This adds support for a couple more terminals.

PR-URL: nodejs#19730
Reviewed-By: Anna Henningsen <[email protected]>
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: Matteo Collina <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Trivikram Kamat <[email protected]>
@targos targos removed the author ready PRs that have at least one approval, no pending requests for changes, and a CI started. label Apr 4, 2018
targos pushed a commit that referenced this pull request Apr 6, 2018
This adds attributions for the getColorDepth function as it got
inspired by https://github.com/chalk/supports-color and more sources.

PR-URL: #19730
Reviewed-By: Anna Henningsen <[email protected]>
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: Matteo Collina <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Trivikram Kamat <[email protected]>
targos pushed a commit that referenced this pull request Apr 6, 2018
This adds support for a couple more terminals.

PR-URL: #19730
Reviewed-By: Anna Henningsen <[email protected]>
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: Matteo Collina <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Trivikram Kamat <[email protected]>
@BridgeAR BridgeAR deleted the improve-tty-color-detection branch April 1, 2019 23:40
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8 participants