dhall: add --output options to dhall #1399
Conversation
dhall/src/Dhall/Main.hs
Outdated
| f (Just file) = Output file | ||
|
|
||
| p = Options.Applicative.strOption | ||
| ( Options.Applicative.short 'o' |
There was a problem hiding this comment.
So far dhall has largely refrained from using short options – I'm not sure why though. Probably we want the CLI commands to be as readable as possible too…
Thoughts, @Gabriel439?
There was a problem hiding this comment.
Yeah, the use of only long options is intentional.
In my experience, short options are an impediment to learning to beginners (especially if they learn from tutorial material that uses short options or by observing other people using short options). Short options also tend to lead to people cargo-culting the options blindly without thinking about what they do. This comment accurately summarizes what happens when short options become idiomatic:
https://xkcd.com/1168/
dhall/src/Dhall/Main.hs
Outdated
| case output of | ||
| StandardOutput -> render annotatedExpression System.IO.stdout | ||
| OutputFile file_ -> | ||
| System.IO.withFile file_ System.IO.WriteMode $ render annotatedExpression |
There was a problem hiding this comment.
Ah, sorry for the misunderstanding. I thought of something like
| System.IO.withFile file_ System.IO.WriteMode $ render annotatedExpression | |
| System.IO.withFile file_ System.IO.WriteMode $ \h -> render h annotatedExpression |
As requested in #1386.