How do I print help info with colored command names?

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#478 14 comments 2 reactions 0 assignees View on GitHub

@Martinsos is already working on this.

Since Jun 10, 2023.

  • #482 by @Martinsos — open

Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Stale
Tech stack
haskell
Domain
cli

Research direction

Start with Options.Applicative.Help and the customExecParser/style usage shown in the example, then reproduce the output with optparse-applicative 0.17.0.0. Determine whether styling can apply to the command name rather than its metavar; done means help output colors myCommand while leaving the metavar behavior correct.

Written by the indexing model from the issue text.

Description

Hello! I'm having trouble finding a solution to this. Is something like this currently possible?

optparse-applicative version: 0.17.0.0

Currently, what I tried to so far -


import Options.Applicative (Parser, (<**>))
import qualified Options.Applicative as O
import qualified Options.Applicative.Help as OH

main :: IO ()
main = pure =<< O.customExecParser (O.prefs O.showHelpOnEmpty) opts
  where
    opts =
      O.info
        (myCommands <**> O.helper)
        ( O.fullDesc <> O.progDesc "")

myCommands :: Parser a
myCommands =
  O.subparser $
    O.command
      "myCommand"
      ( O.info
          O.empty
          (O.progDesc "description here")
      )
      <> O.style OH.green

but I got the "metavar" part of it colored green instead, not myCommand which is what I'm looking for:
image

Dominant language
Haskell
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957
Forks
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