Clap has had several ways for controlling how many values will be captured without always being clear on how they interacted, including
Arg::multiple_values(true)
Arg::number_of_values(4)
Arg::min_values(2)
Arg::max_values(20)
Arg::takes_value(true)
These have now all been collapsed into Arg::num_args which accepts both
single values and ranges of values. num_args controls how many raw arguments
on the command line will be captured as values per occurrence and independent
of value delimiters.
Clap strives to give a polished CLI experience out of the box with little
ceremony. With some feedback that has accumulated over time, we took this
release as an opportunity to re-evaluate our --help output to make sure it is
meeting that goal.
In doing this evaluation, we wanted to keep in mind:
Whether other CLIs had ideas that make sense to apply
Providing an experience that fits within the rest of applications and works across all shells
Before:
git
A fictional versioning CLI
USAGE:
git <SUBCOMMAND>
OPTIONS:
-h, --help Print help information
SUBCOMMANDS:
add adds things
clone Clones repos
help Print this message or the help of the given subcommand(s)
push pushes things
stash
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Updates the requirements on clap to permit the latest version.
Changelog
Sourced from clap's changelog.
... (truncated)
Commits
3a74d82
chore: Release9cd1939
Merge pull request #4269 from epage/usagecb1cd67
fix(error): Include failed arg in usage in --flag=bad-value error12d76d6
fix(error): Include 'Usage:' title in --flag=bad-value error3a8d2a5
test(parser): Verify existing --flag=bad-value casec7dd03e
Merge pull request #4267 from jpgrayson/override-usage-help-4f925ca8
docs: Clarify how to use examples7dd216b
docs: Update multiline usage override rulesa0c8c7d
docs: Clean up StyledStr entries01672f8
chore: ReleaseDependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
@dependabot rebase
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