gen_completion to string

[davidszotten]

until there is a way to ship additional files with cargo install, i'd like to add a subcommand to my binary that prints the completion code to stdout, (that users can redirect to a file at location at their convenience; this seems more intuitive than pointing the commend at a directory and have it write there)

at the moment it seems the main entry point ComplGen is completely built around writing a file to a directory. what are your thoughts on splitting out the file writing from the generation?

given the single public api gen_completions i'm not sure what the best approach to adding/changing this would be.

[kbknapp]

Without making a breaking change, this could be possible by adding a App::gen_completion_to<W: io::Write> method. It would require some fairly minor changes to the internals of ComplGen but that shoudln't be too hard. Thanks for the idea 👍

[davidszotten]

cool, will have a go