[MNG-7180] Make --color option behave more like BSD/GNU grep's --color option

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.8.2, 4.0.0-alpha-2, 4.0.0
• Assignee: Michael Osipov
• Reporter: Michael Osipov
• Created: 30/Jun/21 21:07
• Updated: 20/Oct/22 08:11
• Resolved: 03/Jul/21 16:54

Description

Since MNG-7080 introduced this option we mimic grep's behavior, but not the way grep actually does.

GNU grep: https://git.savannah.gnu.org/cgit/grep.git/tree/src/grep.c#n2751
FreeBSD grep: https://github.com/freebsd/freebsd-src/blob/781c3b51193e5bd99773439192ca68fdfdd9c330/usr.bin/grep/grep.c#L576-L596

• Both make the value for --color optional and default to auto
• They also accept tty, if-tty, yes, force, none, no

We should support that approach too: Optional value and privately accepting additional values.

Issue Links

• is related to: MNG-7080 Add a --color option