Force colors without forcing the style?

[toonn]

In ranger/ranger#2762 a user was trying to make use of Glow for Markdown previews and they didn't see any change so they assumed it didn't work.

Does Glow disable colors when run non-interactively, like ls does? Or is there a failing check for color capability maybe? What does Glow need to determine colors are OK to use?

[muesli]

Indeed, it disables styling when not attached to a terminal. Internally it uses termenv to detect the capabilities and settings of the terminal. You can enforce styling by either setting CLICOLOR_FORCE to 1 or passing a style manually, e.g. glow -s dark.

[toonn]

Would be nice if this was more obviously documented BTW. It seems Glow is missing a man page altogether?

[suchipi]

Fwiw, glow 1.5.0 on macOS doesn't seem to respect CLICOLOR_FORCE=1, but manually specifying a style does work.

[toonn]

@suchipi, I thought I'd noticed this regressing. Did it never work on macOS or is it really a regression in the behavior?

[suchipi]

Not sure; hadn't tried glow before yesterday

[suchipi]

CLICOLOR_FORCE doesn't seem to work even on Linux (I tested glow 1.5, 1.4.1, 1.4.0, 1.1.0, 0.2.0, and 0.1)

[toonn]

I know it worked at some point for me. Maybe it's because of a dependency?
@muesli, could you take a look at this?

[meowgorithm]

Just a note that we're discussing the issue here: #654