One can now use `App::long_version` to dsiplay a different (presumably
longer) message when `--version` is called. This commit also adds the
corresponding print/write long version methods of `App`
One can now use `App::print_long_help` or `App::write_long_help`
Note that `App::write_long_help` is **NOT** affected by kbknapp/clap-rs#808 in the manner
that `App::write_help` help is and thus should be preferred if at all possible.
One can now use `Arg::long_help` which will be displayed when the user
runs `--help`. This is typically longer form content and will be
displayed using the NextLineHelp methodology.
If one specifies the standard `Arg::help` it will be displayed when the
user runs `-h` (by default, unless the help short has been overridden).
The help text will be displayed in the typical clap fashion.
The help format requested (-h/short or --help/long) will be the
*default* displayed. Meaning, if one runs `--help` (long) but only an
`Arg::help` has been provided, the message from `Arg::help` will be
used. Likewise, if one requests `-h` (short) but only
`Arg::long_help` was provided, `Arg::long_help` will be displayed appropriately
wrapped and aligned.
Completion script generation *only* uses `Arg::help` in order to be
concise.
cc @BurntSushi thanks for the idea!
One should be able to override the auto generated help and version flags
by simply providing an arg with a long of `help` or `version`
respectively. This bug was preventing that from happening.
However, now that it's fixed if one was relying on adding an arg with a
long of `help` or `version` and using `get_matches_safe` to produce the
`ErrorKind::HelpDisplayed` or `ErrorKind::VersionDisplayed` errors they
**WILL NOT** happen anymore.
This is because the bug was causing those "errors" to occur (i.e. the
help or version message to be displayed). The "fix" to get that
functionality back is to either:
* Remove the arg with the long of `help` or `version`
* Use `ArgMatches::is_present` instead of `App::get_matches_safe` to check for the presence of your custom help or version flag
Option 1 is the easiest provided one wasn't using said arg to *also*
override other aspects of the flags as well (short, help message, etc.)
Even though this may break some code, as per the compatibility policy
listed in the readme; code that breaks due to relying on a bug does
*not* constitute a major version bump. I will however be bumping the
minor version instead of just the patch version. I will also be
searching for, contacting, and attempting to submit PRs to any affected
projects prior to releasing the next version to crates.io
Closes#922
Adds a new method, `Arg::hide_default_value`, which allows for
specifying whether the default value of the argument should be hidden
from the help string.
Closes#902
Marking a positional argument `.last(true)` will allow accessing this argument earlier if the `--` syntax is used (i.e. skipping other positional args)
and also change the usage string to one of the following:
* `$ prog [arg1] [-- <last_arg>]`
* `$ prog [arg1] -- <last_arg>` (if the arg marked `.last(true)` is also marked `.required(true)`)
Closes#888
This makes a very big difference for CLIs that parse a large number of
values (think ripgrep over a large directory).
This commit improved the ripgrep parsing of ~2,000 values, simulating
giving ripgrep a bunch of files. Parsing when from ~1,200,000 ns to
~400,000 ns! This was conducted a i7-5600U 2.6GHz
One can now define default values that contain invalid UTF-8.
The underlying implementation has also been changed to use OsStrs in order to avoid duplication
of code and provide the new APIs basically for free.
Closes#849
Not only does this remove some unsafe code from clap itself, `atty` does the
right thing on Windows too. This isn't relevant now since we don't currently
support colorized output on Windows, but will come in handy if/when we
implement that feature (#836).
* tests: adds tests for default values triggering conditional requirements
* fix: fixes a bug where default values should have triggered a conditional requirement but didnt
Closes#831
* tests: adds tests for missing conditional requirements in usage string of errors
* fix: fixes a bug where conditionally required args werent appearing in errors
* tests: adds tests for completion generators
* tests: adds tests for completions with binaries names that have underscores
* fix: fixes a bug where ZSH completions would panic if the binary name had an underscore in it
Closes#581
* fix: fixes bash completions for commands that have an underscore in the name
Closes#581
* chore: fix the category for crates.io
* docs(Macros): adds a warning about changing values in Cargo.toml not triggering a rebuild automatically
Closes#838
* fix(Completions): fixes a bug where global args weren't included in the generated completion scripts
Closes#841
* fix: fixes a println->debugln typo
* chore: increase version
* fix: fixes a critical bug where subcommand settings were being propogated too far
Closes#832
* imp: adds ArgGroup::multiple to the supported YAML fields for building ArgGroups from YAML
Closes#840
* chore: increase version
Before, inserting a newline did not move the prev_space index forward.
This meant that the next word was measured incorrectly since the
length was measured back to the word before the newly inserted
linebreak.
Fixes#828.
Before, wrapping the help text at, say, 80 characters really meant
that every line could be at most 79 characters wide.
Lines can now be up to and including avail_chars columns wide.
If needed, a desired margin or padding can be subtracted from the
avail_chars argument at a later point.
This fixes#827. The problem was that the check `grp.args.contains(&grp.args[i])` was a) trivially fulfilled (of course `grp.args[i]` is contained in `grp.args`) and b) causing an out-of-bounds error, since the indices were taken from `.required.len()`.
With this change the argument in the group will be removed from the list of required arguments, as intended.
When calling the executable without arguments one expects a help message. However, if even one argument has a default value, the validation step of the parser will always see at least one argument, and therefore report success. This effectively disables the settings.
