Add rprompt support for right-side prompt display (take 2) #879
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This adds support for displaying a right-aligned prompt (rprompt)
similar to zsh's RPROMPT feature. The rprompt is displayed at the
right edge of the terminal and automatically hides when the input
line gets too long.
Usage:
Reline.readline("> ", rprompt: "[%H:%M]")
The rprompt is rendered as part of Reline's normal render cycle,
so it persists during line editing unlike workarounds using
pre_input_hook.
for prompt, add_hist, and rprompt.
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Here's another take for the RPROMPT feature that I sent at #878.
Based on a discussion with @tompng, I changed the API from the
Reline.rprompt=setter to a keyword argument forReline.readline/Reline.readmultiline.Added was a keyword argument
rprompt:, plus,prompt:andadd_hist:for consistency, keeping the existing positional ones for compatibility.Usage
or
Testing
Try this. Now it's much simpler, obviously.
ruby -rreline -Ilib -e 'print Reline.readline("> ", rprompt: "[#{Dir.pwd}]")'