all: enable infer long arguments in clap

src/uu/arch/src/arch.rs

@@ -8,7 +8,7 @@
 
 use platform_info::*;
 
-use clap::{crate_version, App};
+use clap::{crate_version, App, AppSettings};
 use uucore::error::{FromIo, UResult};
 
 static ABOUT: &str = "Display machine architecture";
@@ -28,4 +28,5 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(crate_version!())
         .about(ABOUT)
         .after_help(SUMMARY)
+        .setting(AppSettings::InferLongArgs)
 }

src/uu/base32/src/base_common.rs

@@ -18,7 +18,7 @@ use std::fs::File;
 use std::io::{BufReader, Stdin};
 use std::path::Path;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 
 pub static BASE_CMD_PARSE_ERROR: i32 = 1;
 
@@ -97,6 +97,7 @@ pub fn base_app(about: &str) -> App {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(about)
+        .setting(AppSettings::InferLongArgs)
         // Format arguments.
         .arg(
             Arg::new(options::DECODE)

src/uu/basename/src/basename.rs

@@ -7,7 +7,7 @@
 
 // spell-checker:ignore (ToDO) fullname
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::path::{is_separator, PathBuf};
 use uucore::display::Quotable;
 use uucore::error::{UResult, UUsageError};
@@ -97,6 +97,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(SUMMARY)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::MULTIPLE)
                 .short('a')

src/uu/basenc/src/basenc.rs

@@ -36,9 +36,6 @@ const ENCODINGS: &[(&str, Format)] = &[
     ("base2lsbf", Format::Base2Lsbf),
     ("base2msbf", Format::Base2Msbf),
     ("z85", Format::Z85),
-    // common abbreviations. TODO: once we have clap 3.0 we can use `AppSettings::InferLongArgs` to get all abbreviations automatically
-    ("base2l", Format::Base2Lsbf),
-    ("base2m", Format::Base2Msbf),
 ];
 
 fn usage() -> String {

src/uu/cat/src/cat.rs

@@ -14,7 +14,7 @@
 extern crate unix_socket;
 
 // last synced with: cat (GNU coreutils) 8.13
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::fs::{metadata, File};
 use std::io::{self, Read, Write};
 use thiserror::Error;
@@ -245,6 +245,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(crate_version!())
         .override_usage(SYNTAX)
         .about(SUMMARY)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::FILE)
                 .hide(true)

src/uu/chcon/src/chcon.rs

@@ -5,7 +5,7 @@
 use uucore::error::{UResult, USimpleError, UUsageError};
 use uucore::{display::Quotable, show_error, show_warning};
 
-use clap::{App, Arg};
+use clap::{App, AppSettings, Arg};
 use selinux::{OpaqueSecurityContext, SecurityContext};
 
 use std::borrow::Cow;
@@ -164,6 +164,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(VERSION)
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::dereference::DEREFERENCE)
                 .long(options::dereference::DEREFERENCE)

src/uu/chgrp/src/chgrp.rs

@@ -12,7 +12,7 @@ pub use uucore::entries;
 use uucore::error::{FromIo, UResult, USimpleError};
 use uucore::perms::{chown_base, options, IfFrom};
 
-use clap::{App, Arg, ArgMatches};
+use clap::{App, AppSettings, Arg, ArgMatches};
 
 use std::fs;
 use std::os::unix::fs::MetadataExt;
@@ -68,6 +68,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(VERSION)
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::verbosity::CHANGES)
                 .short('c')

src/uu/chmod/src/chmod.rs

@@ -7,7 +7,7 @@
 
 // spell-checker:ignore (ToDO) Chmoder cmode fmode fperm fref ugoa RFILE RFILE's
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::fs;
 use std::os::unix::fs::{MetadataExt, PermissionsExt};
 use std::path::Path;
@@ -125,6 +125,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::CHANGES)
                 .long(options::CHANGES)

src/uu/chown/src/chown.rs

@@ -13,7 +13,7 @@ use uucore::perms::{chown_base, options, IfFrom};
 
 use uucore::error::{FromIo, UResult, USimpleError};
 
-use clap::{crate_version, App, Arg, ArgMatches};
+use clap::{crate_version, App, AppSettings, Arg, ArgMatches};
 
 use std::fs;
 use std::os::unix::fs::MetadataExt;
@@ -71,6 +71,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::verbosity::CHANGES)
                 .short('c')

src/uu/chroot/src/chroot.rs

@@ -10,7 +10,7 @@
 mod error;
 
 use crate::error::ChrootError;
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::ffi::CString;
 use std::io::Error;
 use std::path::Path;
@@ -96,6 +96,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(crate_version!())
         .about(ABOUT)
         .override_usage(SYNTAX)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::NEWROOT)
                 .hide(true)

src/uu/cksum/src/cksum.rs

@@ -6,7 +6,7 @@
 // file that was distributed with this source code.
 
 // spell-checker:ignore (ToDO) fname
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::fs::File;
 use std::io::{self, stdin, BufReader, Read};
 use std::path::Path;
@@ -146,6 +146,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(crate_version!())
         .about(SUMMARY)
         .override_usage(SYNTAX)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::FILE)
                 .hide(true)

src/uu/comm/src/comm.rs

@@ -15,7 +15,7 @@ use uucore::error::FromIo;
 use uucore::error::UResult;
 use uucore::InvalidEncodingHandling;
 
-use clap::{crate_version, App, Arg, ArgMatches};
+use clap::{crate_version, App, AppSettings, Arg, ArgMatches};
 
 static ABOUT: &str = "compare two sorted files line by line";
 static LONG_HELP: &str = "";
@@ -152,6 +152,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(crate_version!())
         .about(ABOUT)
         .after_help(LONG_HELP)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::COLUMN_1)
                 .short('1')

src/uu/cp/src/cp.rs

@@ -27,7 +27,7 @@ use winapi::um::fileapi::GetFileInformationByHandle;
 
 use std::borrow::Cow;
 
-use clap::{crate_version, App, Arg, ArgMatches};
+use clap::{crate_version, App, AppSettings, Arg, ArgMatches};
 use filetime::FileTime;
 use quick_error::ResultExt;
 use std::collections::HashSet;
@@ -300,6 +300,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(Arg::new(options::TARGET_DIRECTORY)
              .short('t')
              .conflicts_with(options::NO_TARGET_DIRECTORY)

src/uu/csplit/src/csplit.rs

@@ -12,7 +12,7 @@ use std::{
     io::{BufRead, BufWriter, Write},
 };
 
-use clap::{crate_version, App, Arg, ArgMatches};
+use clap::{crate_version, App, AppSettings, Arg, ArgMatches};
 use regex::Regex;
 use uucore::display::Quotable;
 use uucore::error::{FromIo, UResult};
@@ -757,6 +757,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(SUMMARY)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::SUFFIX_FORMAT)
                 .short('b')

src/uu/cut/src/cut.rs

@@ -11,7 +11,7 @@
 extern crate uucore;
 
 use bstr::io::BufReadExt;
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::fs::File;
 use std::io::{stdin, stdout, BufReader, BufWriter, Read, Write};
 use std::path::Path;
@@ -539,6 +539,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .override_usage(SYNTAX)
         .about(SUMMARY)
         .after_help(LONG_HELP)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::BYTES)
                 .short('b')

src/uu/date/src/date.rs

@@ -11,7 +11,7 @@
 use chrono::{DateTime, FixedOffset, Local, Offset, Utc};
 #[cfg(windows)]
 use chrono::{Datelike, Timelike};
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 #[cfg(all(unix, not(target_os = "macos"), not(target_os = "redox")))]
 use libc::{clock_settime, timespec, CLOCK_REALTIME};
 use std::fs::File;
@@ -261,6 +261,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(OPT_DATE)
                 .short('d')

src/uu/dd/src/dd.rs

@@ -36,7 +36,7 @@ use std::thread;
 use std::time;
 
 use byte_unit::Byte;
-use clap::{crate_version, App, Arg, ArgMatches};
+use clap::{crate_version, App, AppSettings, Arg, ArgMatches};
 use gcd::Gcd;
 #[cfg(target_os = "linux")]
 use signal_hook::consts::signal;
@@ -941,6 +941,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::INFILE)
                 .long(options::INFILE)

src/uu/df/src/df.rs

@@ -12,7 +12,7 @@ use uucore::error::UResult;
 use uucore::fsext::statfs_fn;
 use uucore::fsext::{read_fs_list, FsUsage, MountInfo};
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 
 use number_prefix::NumberPrefix;
 use std::cell::Cell;
@@ -425,6 +425,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(OPT_ALL)
                 .short('a')

src/uu/dircolors/src/dircolors.rs

@@ -13,7 +13,7 @@ use std::env;
 use std::fs::File;
 use std::io::{BufRead, BufReader};
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use uucore::display::Quotable;
 use uucore::error::{UResult, USimpleError, UUsageError};
 
@@ -165,6 +165,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(crate_version!())
         .about(SUMMARY)
         .after_help(LONG_HELP)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::BOURNE_SHELL)
                 .long("sh")

src/uu/dirname/src/dirname.rs

@@ -5,7 +5,7 @@
 // For the full copyright and license information, please view the LICENSE
 // file that was distributed with this source code.
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::path::Path;
 use uucore::display::print_verbatim;
 use uucore::error::{UResult, UUsageError};
@@ -87,6 +87,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .about(ABOUT)
         .version(crate_version!())
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::ZERO)
                 .long(options::ZERO)

src/uu/du/src/du.rs

@@ -10,8 +10,7 @@ extern crate uucore;
 
 use chrono::prelude::DateTime;
 use chrono::Local;
-use clap::ArgMatches;
+use clap::{crate_version, App, AppSettings, Arg, ArgMatches};
-use clap::{crate_version, App, Arg};
 use std::collections::HashSet;
 use std::convert::TryFrom;
 use std::env;
@@ -630,6 +629,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(crate_version!())
         .about(SUMMARY)
         .after_help(LONG_HELP)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::ALL)
                 .short('a')
@@ -644,7 +644,6 @@ pub fn uu_app<'a>() -> App<'a> {
                     although  the apparent  size is usually smaller, it may be larger due to holes \
                     in ('sparse') files, internal  fragmentation,  indirect  blocks, and the like"
                 )
-                .alias("app") // The GNU test suite uses this alias
         )
         .arg(
             Arg::new(options::BLOCK_SIZE)
@@ -753,7 +752,6 @@ pub fn uu_app<'a>() -> App<'a> {
             Arg::new(options::THRESHOLD)
                 .short('t')
                 .long(options::THRESHOLD)
-                .alias("th")
                 .value_name("SIZE")
                 .number_of_values(1)
                 .allow_hyphen_values(true)

src/uu/echo/src/echo.rs

@@ -6,7 +6,7 @@
 // For the full copyright and license information, please view the LICENSE
 // file that was distributed with this source code.
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::io::{self, Write};
 use std::iter::Peekable;
 use std::str::Chars;
@@ -134,8 +134,9 @@ pub fn uu_app<'a>() -> App<'a> {
         // TrailingVarArg specifies the final positional argument is a VarArg
         // and it doesn't attempts the parse any further args.
         // Final argument must have multiple(true) or the usage string equivalent.
-        .setting(clap::AppSettings::TrailingVarArg)
+        .setting(AppSettings::TrailingVarArg)
-        .setting(clap::AppSettings::AllowHyphenValues)
+        .setting(AppSettings::AllowHyphenValues)
+        .setting(AppSettings::InferLongArgs)
         .version(crate_version!())
         .about(SUMMARY)
         .after_help(AFTER_HELP)

src/uu/env/src/env.rs

@@ -127,6 +127,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .override_usage(USAGE)
         .after_help(AFTER_HELP)
         .setting(AppSettings::AllowExternalSubcommands)
+        .setting(AppSettings::InferLongArgs)
         .arg(Arg::new("ignore-environment")
             .short('i')
             .long("ignore-environment")

src/uu/expand/src/expand.rs

@@ -12,7 +12,7 @@
 #[macro_use]
 extern crate uucore;
 
-use clap::{crate_version, App, Arg, ArgMatches};
+use clap::{crate_version, App, AppSettings, Arg, ArgMatches};
 use std::fs::File;
 use std::io::{stdin, stdout, BufRead, BufReader, BufWriter, Read, Write};
 use std::str::from_utf8;
@@ -184,6 +184,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(crate_version!())
         .about(ABOUT)
         .after_help(LONG_HELP)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::INITIAL)
                 .long(options::INITIAL)

src/uu/expr/src/expr.rs

@@ -5,7 +5,7 @@
 //* For the full copyright and license information, please view the LICENSE
 //* file that was distributed with this source code.
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use uucore::error::{UResult, USimpleError};
 use uucore::InvalidEncodingHandling;
 
@@ -17,6 +17,7 @@ const HELP: &str = "help";
 
 pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
+        .setting(AppSettings::InferLongArgs)
         .arg(Arg::new(VERSION).long(VERSION))
         .arg(Arg::new(HELP).long(HELP))
 }

src/uu/factor/src/cli.rs

@@ -14,7 +14,7 @@ use std::fmt::Write as FmtWrite;
 use std::io::{self, stdin, stdout, BufRead, Write};
 
 mod factor;
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 pub use factor::*;
 use uucore::display::Quotable;
 use uucore::error::UResult;
@@ -81,5 +81,6 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(SUMMARY)
+        .setting(AppSettings::InferLongArgs)
         .arg(Arg::new(options::NUMBER).multiple_occurrences(true))
 }

src/uu/fmt/src/fmt.rs

@@ -10,7 +10,7 @@
 #[macro_use]
 extern crate uucore;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::cmp;
 use std::fs::File;
 use std::io::{stdin, stdout, Write};
@@ -226,6 +226,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(OPT_CROWN_MARGIN)
                 .short('c')

src/uu/fold/src/fold.rs

@@ -7,7 +7,7 @@
 
 // spell-checker:ignore (ToDOs) ncount routput
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::fs::File;
 use std::io::{stdin, BufRead, BufReader, Read};
 use std::path::Path;
@@ -69,6 +69,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(crate_version!())
         .override_usage(SYNTAX)
         .about(SUMMARY)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::BYTES)
                 .long(options::BYTES)

src/uu/groups/src/groups.rs

@@ -25,7 +25,7 @@ use uucore::{
     error::{UError, UResult},
 };
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 
 mod options {
     pub const USERS: &str = "USERNAME";
@@ -109,6 +109,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::USERS)
                 .multiple_occurrences(true)

src/uu/hashsum/src/hashsum.rs

@@ -20,7 +20,7 @@ mod digest;
 use self::digest::Digest;
 use self::digest::DigestWriter;
 
-use clap::{App, Arg, ArgMatches};
+use clap::{App, AppSettings, Arg, ArgMatches};
 use hex::ToHex;
 use md5::Context as Md5;
 use regex::Regex;
@@ -343,6 +343,7 @@ pub fn uu_app_common<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about("Compute and check message digests.")
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new("binary")
                 .short('b')

src/uu/head/src/head.rs

@@ -5,7 +5,7 @@
 
 // spell-checker:ignore (vars) zlines BUFWRITER seekable
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::convert::{TryFrom, TryInto};
 use std::ffi::OsString;
 use std::io::{self, BufWriter, ErrorKind, Read, Seek, SeekFrom, Write};
@@ -47,6 +47,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(crate_version!())
         .about(ABOUT)
         .override_usage(USAGE)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::BYTES_NAME)
                 .short('c')

src/uu/hostid/src/hostid.rs

@@ -7,7 +7,7 @@
 
 // spell-checker:ignore (ToDO) gethostid
 
-use clap::{crate_version, App};
+use clap::{crate_version, App, AppSettings};
 use libc::c_long;
 use uucore::error::UResult;
 
@@ -29,6 +29,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .override_usage(SYNTAX)
+        .setting(AppSettings::InferLongArgs)
 }
 
 fn hostid() {

src/uu/hostname/src/hostname.rs

@@ -11,7 +11,7 @@ use std::collections::hash_set::HashSet;
 use std::net::ToSocketAddrs;
 use std::str;
 
-use clap::{crate_version, App, Arg, ArgMatches};
+use clap::{crate_version, App, AppSettings, Arg, ArgMatches};
 
 use uucore::error::{FromIo, UResult};
 
@@ -76,6 +76,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(OPT_DOMAIN)
                 .short('d')

src/uu/id/src/id.rs

@@ -39,7 +39,7 @@
 #[macro_use]
 extern crate uucore;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::ffi::CStr;
 use uucore::display::Quotable;
 use uucore::entries::{self, Group, Locate, Passwd};
@@ -351,6 +351,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::OPT_AUDIT)
                 .short('A')

src/uu/install/src/install.rs

@@ -12,7 +12,7 @@ mod mode;
 #[macro_use]
 extern crate uucore;
 
-use clap::{crate_version, App, Arg, ArgMatches};
+use clap::{crate_version, App, AppSettings, Arg, ArgMatches};
 use file_diff::diff;
 use filetime::{set_file_times, FileTime};
 use uucore::backup_control::{self, BackupMode};
@@ -196,6 +196,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             backup_control::arguments::backup()
         )

src/uu/join/src/join.rs

@@ -10,7 +10,7 @@
 #[macro_use]
 extern crate uucore;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::cmp::Ordering;
 use std::fs::File;
 use std::io::{stdin, stdout, BufRead, BufReader, Split, Stdin, Write};
@@ -600,6 +600,7 @@ standard output. The default join field is the first, delimited by blanks.
 
 When FILE1 or FILE2 (not both) is -, read standard input.",
         )
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new("a")
                 .short('a')

src/uu/kill/src/kill.rs

@@ -10,7 +10,7 @@
 #[macro_use]
 extern crate uucore;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use libc::{c_int, pid_t};
 use std::io::Error;
 use uucore::display::Quotable;
@@ -82,6 +82,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::LIST)
                 .short('l')

src/uu/link/src/link.rs

@@ -4,7 +4,7 @@
 //  *
 //  * For the full copyright and license information, please view the LICENSE
 //  * file that was distributed with this source code.
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::fs::hard_link;
 use std::path::Path;
 use uucore::display::Quotable;
@@ -40,6 +40,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::FILES)
                 .hide(true)

src/uu/ln/src/ln.rs

@@ -10,7 +10,7 @@
 #[macro_use]
 extern crate uucore;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use uucore::display::Quotable;
 use uucore::error::{UError, UResult};
 
@@ -183,6 +183,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(backup_control::arguments::backup())
         .arg(backup_control::arguments::backup_no_args())
         // TODO: opts.arg(

src/uu/logname/src/logname.rs

@@ -12,7 +12,7 @@
 #[macro_use]
 extern crate uucore;
 
-use clap::{crate_version, App};
+use clap::{crate_version, App, AppSettings};
 use std::ffi::CStr;
 use uucore::error::UResult;
 use uucore::InvalidEncodingHandling;
@@ -59,4 +59,5 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(SUMMARY)
+        .setting(AppSettings::InferLongArgs)
 }

src/uu/ls/src/ls.rs

@@ -15,7 +15,7 @@ extern crate lazy_static;
 
 mod quoting_style;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use glob::Pattern;
 use lscolors::LsColors;
 use number_prefix::NumberPrefix;
@@ -709,6 +709,7 @@ pub fn uu_app<'a>() -> App<'a> {
             the command line, expect that it will ignore files and directories \
             whose names start with '.'.",
         )
+        .setting(AppSettings::InferLongArgs)
         // Format arguments
         .arg(
             Arg::new(options::FORMAT)

src/uu/mkdir/src/mkdir.rs

@@ -10,8 +10,7 @@
 #[macro_use]
 extern crate uucore;
 
-use clap::OsValues;
+use clap::{crate_version, App, AppSettings, Arg, ArgMatches, OsValues};
-use clap::{crate_version, App, Arg, ArgMatches};
 use std::fs;
 use std::path::Path;
 use uucore::display::Quotable;
@@ -114,6 +113,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::MODE)
                 .short('m')
@@ -125,7 +125,6 @@ pub fn uu_app<'a>() -> App<'a> {
             Arg::new(options::PARENTS)
                 .short('p')
                 .long(options::PARENTS)
-                .alias("parent")
                 .help("make parent directories as needed"),
         )
         .arg(

src/uu/mkfifo/src/mkfifo.rs

@@ -8,7 +8,7 @@
 #[macro_use]
 extern crate uucore;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use libc::mkfifo;
 use std::ffi::CString;
 use uucore::error::{UResult, USimpleError};
@@ -75,6 +75,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(crate_version!())
         .override_usage(USAGE)
         .about(SUMMARY)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::MODE)
                 .short('m')

src/uu/mknod/src/mknod.rs

@@ -9,7 +9,7 @@
 
 use std::ffi::CString;
 
-use clap::{crate_version, App, Arg, ArgMatches};
+use clap::{crate_version, App, AppSettings, Arg, ArgMatches};
 use libc::{dev_t, mode_t};
 use libc::{S_IFBLK, S_IFCHR, S_IFIFO, S_IRGRP, S_IROTH, S_IRUSR, S_IWGRP, S_IWOTH, S_IWUSR};
 
@@ -149,6 +149,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .override_usage(USAGE)
         .after_help(LONG_HELP)
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new("mode")
                 .short('m')

src/uu/mktemp/src/mktemp.rs

@@ -8,7 +8,7 @@
 
 // spell-checker:ignore (paths) GPGHome
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use uucore::display::{println_verbatim, Quotable};
 use uucore::error::{FromIo, UError, UResult};
 
@@ -139,6 +139,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(OPT_DIRECTORY)
                 .short('d')

src/uu/more/src/more.rs

@@ -17,7 +17,7 @@ use std::{
 #[cfg(all(unix, not(target_os = "fuchsia")))]
 extern crate nix;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use crossterm::{
     event::{self, Event, KeyCode, KeyEvent, KeyModifiers},
     execute, queue,
@@ -100,6 +100,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .about("A file perusal filter for CRT viewing.")
         .version(crate_version!())
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::SILENT)
                 .short('d')

src/uu/mv/src/mv.rs

@@ -13,7 +13,7 @@ mod error;
 #[macro_use]
 extern crate uucore;
 
-use clap::{crate_version, App, Arg, ArgMatches};
+use clap::{crate_version, App, AppSettings, Arg, ArgMatches};
 use std::env;
 use std::ffi::OsString;
 use std::fs;
@@ -123,6 +123,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
     .arg(
         backup_control::arguments::backup()
     )

src/uu/nice/src/nice.rs

@@ -110,6 +110,7 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
 pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .setting(AppSettings::TrailingVarArg)
+        .setting(AppSettings::InferLongArgs)
         .version(crate_version!())
         .arg(
             Arg::new(options::ADJUSTMENT)

src/uu/nl/src/nl.rs

@@ -8,7 +8,7 @@
 
 // spell-checker:ignore (ToDO) corasick memchr
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::fs::File;
 use std::io::{stdin, BufRead, BufReader, Read};
 use std::iter::repeat;
@@ -145,6 +145,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .name(NAME)
         .version(crate_version!())
         .override_usage(USAGE)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::FILE)
                 .hide(true)

src/uu/nohup/src/nohup.rs

@@ -126,6 +126,7 @@ pub fn uu_app<'a>() -> App<'a> {
                 .multiple_occurrences(true),
         )
         .setting(AppSettings::TrailingVarArg)
+        .setting(AppSettings::InferLongArgs)
 }
 
 fn replace_fds() -> UResult<()> {

src/uu/nproc/src/nproc.rs

@@ -7,7 +7,7 @@
 
 // spell-checker:ignore (ToDO) NPROCESSORS nprocs numstr threadstr sysconf
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::env;
 use uucore::display::Quotable;
 use uucore::error::{UResult, USimpleError};
@@ -75,6 +75,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(OPT_ALL)
                 .long(OPT_ALL)

src/uu/numfmt/src/numfmt.rs

@@ -196,6 +196,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .about(ABOUT)
         .after_help(LONG_HELP)
         .setting(AppSettings::AllowNegativeNumbers)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::DELIMITER)
                 .short('d')

src/uu/od/src/od.rs

@@ -295,7 +295,8 @@ pub fn uu_app<'a>() -> App<'a> {
         .setting(
             AppSettings::TrailingVarArg |
             AppSettings::DontDelimitTrailingValues |
-            AppSettings::DeriveDisplayOrder
+            AppSettings::DeriveDisplayOrder |
+            AppSettings::InferLongArgs
         )
         .arg(
             Arg::new(options::ADDRESS_RADIX)

src/uu/paste/src/paste.rs

@@ -7,7 +7,7 @@
 
 // spell-checker:ignore (ToDO) delim
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::fs::File;
 use std::io::{stdin, BufRead, BufReader, Read};
 use std::iter::repeat;
@@ -52,6 +52,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::SERIAL)
                 .long(options::SERIAL)

src/uu/pathchk/src/pathchk.rs

@@ -8,7 +8,7 @@
 //  * that was distributed with this source code.
 
 // spell-checker:ignore (ToDO) lstat
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::fs;
 use std::io::{ErrorKind, Write};
 use uucore::display::Quotable;
@@ -92,6 +92,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::POSIX)
                 .short('p')

src/uu/pinky/src/pinky.rs

@@ -18,7 +18,7 @@ use std::io::BufReader;
 use std::fs::File;
 use std::os::unix::fs::MetadataExt;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::path::PathBuf;
 use uucore::InvalidEncodingHandling;
 
@@ -136,6 +136,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::LONG_FORMAT)
                 .short('l')

src/uu/pr/src/pr.rs

@@ -13,7 +13,7 @@ extern crate quick_error;
 
 use chrono::offset::Local;
 use chrono::DateTime;
-use clap::App;
+use clap::{App, AppSettings};
 use getopts::Matches;
 use getopts::{HasArg, Occur};
 use itertools::Itertools;
@@ -172,7 +172,7 @@ quick_error! {
 }
 
 pub fn uu_app<'a>() -> App<'a> {
-    App::new(uucore::util_name())
+    App::new(uucore::util_name()).setting(AppSettings::InferLongArgs)
 }
 
 #[uucore_procs::gen_uumain]

src/uu/printenv/src/printenv.rs

@@ -7,7 +7,7 @@
 
 /* last synced with: printenv (GNU coreutils) 8.13 */
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::env;
 use uucore::error::UResult;
 
@@ -65,6 +65,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(OPT_NULL)
                 .short('0')

src/uu/printf/src/printf.rs

@@ -2,7 +2,7 @@
 // spell-checker:ignore (change!) each's
 // spell-checker:ignore (ToDO) LONGHELP FORMATSTRING templating parameterizing formatstr
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use uucore::error::{UResult, UUsageError};
 use uucore::memo;
 use uucore::InvalidEncodingHandling;
@@ -297,4 +297,5 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .arg(Arg::new(VERSION).long(VERSION))
         .arg(Arg::new(HELP).long(HELP))
+        .setting(AppSettings::InferLongArgs)
 }

src/uu/ptx/src/ptx.rs

@@ -7,7 +7,7 @@
 
 // spell-checker:ignore (ToDOs) corasick memchr Roff trunc oset iset
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use regex::Regex;
 use std::cmp;
 use std::collections::{BTreeSet, HashMap, HashSet};
@@ -705,6 +705,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .name(NAME)
         .version(crate_version!())
         .override_usage(BRIEF)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::FILE)
                 .hide(true)

src/uu/pwd/src/pwd.rs

@@ -5,7 +5,7 @@
 //  * For the full copyright and license information, please view the LICENSE
 //  * file that was distributed with this source code.
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::env;
 use std::io;
 use std::path::PathBuf;
@@ -156,6 +156,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(OPT_LOGICAL)
                 .short('L')

src/uu/readlink/src/readlink.rs

@@ -10,7 +10,7 @@
 #[macro_use]
 extern crate uucore;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::fs;
 use std::io::{stdout, Write};
 use std::path::{Path, PathBuf};
@@ -102,6 +102,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(OPT_CANONICALIZE)
                 .short('f')

src/uu/realpath/src/realpath.rs

@@ -10,7 +10,7 @@
 #[macro_use]
 extern crate uucore;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::{
     io::{stdout, Write},
     path::{Path, PathBuf},
@@ -78,6 +78,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(OPT_QUIET)
                 .short('q')

src/uu/relpath/src/relpath.rs

@@ -7,7 +7,7 @@
 
 // spell-checker:ignore (ToDO) subpath absto absfrom absbase
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::env;
 use std::path::{Path, PathBuf};
 use uucore::display::println_verbatim;
@@ -86,6 +86,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(Arg::new(options::DIR).short('d').takes_value(true).help(
             "If any of FROM and TO is not subpath of DIR, output absolute path instead of relative",
         ))

src/uu/rm/src/rm.rs

@@ -10,7 +10,7 @@
 #[macro_use]
 extern crate uucore;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use remove_dir_all::remove_dir_all;
 use std::collections::VecDeque;
 use std::fs;
@@ -149,7 +149,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
-
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(OPT_FORCE)
             .short('f')

src/uu/rmdir/src/rmdir.rs

@@ -10,7 +10,7 @@
 #[macro_use]
 extern crate uucore;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::fs::{read_dir, remove_dir};
 use std::io;
 use std::path::Path;
@@ -179,6 +179,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(OPT_IGNORE_FAIL_NON_EMPTY)
                 .long(OPT_IGNORE_FAIL_NON_EMPTY)

src/uu/runcon/src/runcon.rs

@@ -2,7 +2,7 @@
 
 use uucore::error::{UResult, UUsageError};
 
-use clap::{App, Arg};
+use clap::{App, AppSettings, Arg};
 use selinux::{OpaqueSecurityContext, SecurityClass, SecurityContext};
 
 use std::borrow::Cow;
@@ -114,6 +114,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(VERSION)
         .about(ABOUT)
         .after_help(DESCRIPTION)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::COMPUTE)
                 .short('c')

src/uu/seq/src/seq.rs

@@ -147,6 +147,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .setting(AppSettings::TrailingVarArg)
         .setting(AppSettings::AllowHyphenValues)
+        .setting(AppSettings::InferLongArgs)
         .version(crate_version!())
         .about(ABOUT)
         .arg(

src/uu/shred/src/shred.rs

@@ -8,7 +8,7 @@
 
 // spell-checker:ignore (words) writeback wipesync
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use rand::prelude::SliceRandom;
 use rand::Rng;
 use std::cell::{Cell, RefCell};
@@ -326,6 +326,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(crate_version!())
         .about(ABOUT)
         .after_help(AFTER_HELP)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::FORCE)
                 .long(options::FORCE)

src/uu/shuf/src/shuf.rs

@@ -7,7 +7,7 @@
 
 // spell-checker:ignore (ToDO) cmdline evec seps rvec fdata
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use rand::Rng;
 use std::fs::File;
 use std::io::{stdin, stdout, BufReader, BufWriter, Read, Write};
@@ -124,6 +124,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(crate_version!())
         .help_template(TEMPLATE)
         .override_usage(USAGE)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::ECHO)
                 .short('e')

src/uu/sleep/src/sleep.rs

@@ -10,7 +10,7 @@ use std::time::Duration;
 
 use uucore::error::{UResult, USimpleError};
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 
 static ABOUT: &str = "Pause for NUMBER seconds.";
 static LONG_HELP: &str = "Pause for NUMBER seconds.  SUFFIX may be 's' for seconds (the default),
@@ -50,6 +50,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(crate_version!())
         .about(ABOUT)
         .after_help(LONG_HELP)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::NUMBER)
                 .help("pause for NUMBER seconds")

src/uu/sort/src/sort.rs

@@ -25,7 +25,7 @@ mod numeric_str_cmp;
 mod tmp_dir;
 
 use chunks::LineData;
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use custom_str_cmp::custom_str_cmp;
 use ext_sort::ext_sort;
 use fnv::FnvHasher;
@@ -1281,6 +1281,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::modes::SORT)
                 .long(options::modes::SORT)

src/uu/split/src/split.rs

@@ -11,7 +11,7 @@ mod filenames;
 mod platform;
 
 use crate::filenames::FilenameFactory;
-use clap::{crate_version, App, Arg, ArgMatches};
+use clap::{crate_version, App, AppSettings, Arg, ArgMatches};
 use std::convert::TryFrom;
 use std::env;
 use std::fs::remove_file;
@@ -107,6 +107,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about("Create output files containing consecutive or interleaved sections of input")
+        .setting(AppSettings::InferLongArgs)
         // strategy (mutually exclusive)
         .arg(
             Arg::new(OPT_BYTES)

src/uu/stat/src/stat.rs

@@ -16,7 +16,7 @@ use uucore::fsext::{
 };
 use uucore::libc::mode_t;
 
-use clap::{crate_version, App, Arg, ArgMatches};
+use clap::{crate_version, App, AppSettings, Arg, ArgMatches};
 use std::borrow::Cow;
 use std::convert::AsRef;
 use std::os::unix::fs::{FileTypeExt, MetadataExt};
@@ -970,6 +970,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::DEREFERENCE)
                 .short('L')

src/uu/stdbuf/src/stdbuf.rs

@@ -197,6 +197,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .about(ABOUT)
         .after_help(LONG_HELP)
         .setting(AppSettings::TrailingVarArg)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::INPUT)
                 .long(options::INPUT)

src/uu/sum/src/sum.rs

@@ -10,7 +10,7 @@
 #[macro_use]
 extern crate uucore;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::fs::File;
 use std::io::{stdin, Read};
 use std::path::Path;
@@ -146,6 +146,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(crate_version!())
         .override_usage(USAGE)
         .about(SUMMARY)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::FILE)
                 .multiple_occurrences(true)

src/uu/sync/src/sync.rs

@@ -9,7 +9,7 @@
 
 extern crate libc;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::path::Path;
 use uucore::display::Quotable;
 use uucore::error::{UResult, USimpleError};
@@ -198,6 +198,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::FILE_SYSTEM)
                 .short('f')

src/uu/tac/src/tac.rs

@@ -8,7 +8,7 @@
 // spell-checker:ignore (ToDO) sbytes slen dlen memmem memmap Mmap mmap SIGBUS
 mod error;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use memchr::memmem;
 use memmap2::Mmap;
 use std::io::{stdin, stdout, BufWriter, Read, Write};
@@ -66,6 +66,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(crate_version!())
         .override_usage(USAGE)
         .about(SUMMARY)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::BEFORE)
                 .short('b')

src/uu/tail/src/tail.rs

@@ -22,7 +22,7 @@ mod platform;
 use chunks::ReverseChunks;
 use lines::lines;
 
-use clap::{App, Arg};
+use clap::{App, AppSettings, Arg};
 use std::collections::VecDeque;
 use std::ffi::OsString;
 use std::fmt;
@@ -279,6 +279,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(crate_version!())
         .about(ABOUT)
         .override_usage(USAGE)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::BYTES)
                 .short('c')

src/uu/tee/src/tee.rs

@@ -8,7 +8,7 @@
 #[macro_use]
 extern crate uucore;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use retain_mut::RetainMut;
 use std::fs::OpenOptions;
 use std::io::{copy, sink, stdin, stdout, Error, ErrorKind, Read, Result, Write};
@@ -64,6 +64,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(crate_version!())
         .about(ABOUT)
         .after_help("If a FILE is -, it refers to a file named - .")
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::APPEND)
                 .long(options::APPEND)

src/uu/timeout/src/timeout.rs

@@ -167,6 +167,7 @@ pub fn uu_app<'a>() -> App<'a> {
                 .multiple_occurrences(true)
         )
         .setting(AppSettings::TrailingVarArg)
+        .setting(AppSettings::InferLongArgs)
 }
 
 /// Remove pre-existing SIGCHLD handlers that would make waiting for the child's exit code fail.

src/uu/touch/src/touch.rs

@@ -13,7 +13,7 @@ pub extern crate filetime;
 #[macro_use]
 extern crate uucore;
 
-use clap::{crate_version, App, Arg, ArgGroup};
+use clap::{crate_version, App, AppSettings, Arg, ArgGroup};
 use filetime::*;
 use std::fs::{self, File};
 use std::path::Path;
@@ -133,6 +133,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::ACCESS)
                 .short('a')
@@ -176,7 +177,6 @@ pub fn uu_app<'a>() -> App<'a> {
             Arg::new(options::sources::REFERENCE)
                 .short('r')
                 .long(options::sources::REFERENCE)
-                .alias("ref") // clapv3
                 .help("use this file's times instead of the current time")
                 .value_name("FILE")
                 .allow_invalid_utf8(true),

src/uu/tr/src/tr.rs

@@ -11,7 +11,7 @@ mod convert;
 mod operation;
 mod unicode_table;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use nom::AsBytes;
 use operation::{translate_input, Sequence, SqueezeOperation, TranslateOperation};
 use std::io::{stdin, stdout, BufReader, BufWriter};
@@ -56,7 +56,7 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
         .get_matches_from(args);
 
     let delete_flag = matches.is_present(options::DELETE);
-    let complement_flag = matches.is_present(options::COMPLEMENT) || matches.is_present("C");
+    let complement_flag = matches.is_present(options::COMPLEMENT);
     let squeeze_flag = matches.is_present(options::SQUEEZE);
     let truncate_set1_flag = matches.is_present(options::TRUNCATE_SET1);
 
@@ -148,18 +148,15 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::COMPLEMENT)
-                // .visible_short_alias('C')  // TODO: requires clap "3.0.0-beta.2"
+                .visible_short_alias('C')
                 .short('c')
                 .long(options::COMPLEMENT)
                 .help("use the complement of SET1"),
         )
-        .arg(
-            Arg::new("C") // work around for `Arg::visible_short_alias`
-                .short('C')
-                .help("same as -c"),
-        )
         .arg(
             Arg::new(options::DELETE)
                 .short('d')

src/uu/true/src/true.rs

@@ -5,7 +5,7 @@
 //  * For the full copyright and license information, please view the LICENSE
 //  * file that was distributed with this source code.
 
-use clap::App;
+use clap::{App, AppSettings};
 use uucore::error::UResult;
 
 #[uucore_procs::gen_uumain]
@@ -15,5 +15,5 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
 }
 
 pub fn uu_app<'a>() -> App<'a> {
-    App::new(uucore::util_name())
+    App::new(uucore::util_name()).setting(AppSettings::InferLongArgs)
 }

src/uu/truncate/src/truncate.rs

@@ -6,7 +6,7 @@
 //  * file that was distributed with this source code.
 
 // spell-checker:ignore (ToDO) RFILE refsize rfilename fsize tsize
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::convert::TryFrom;
 use std::fs::{metadata, OpenOptions};
 use std::io::ErrorKind;
@@ -117,6 +117,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::IO_BLOCKS)
             .short('o')

src/uu/tsort/src/tsort.rs

@@ -5,7 +5,7 @@
 //  *
 //  * For the full copyright and license information, please view the LICENSE
 //  * file that was distributed with this source code.
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::collections::{HashMap, HashSet};
 use std::fs::File;
 use std::io::{stdin, BufRead, BufReader, Read};
@@ -98,6 +98,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(crate_version!())
         .override_usage(USAGE)
         .about(SUMMARY)
+        .setting(AppSettings::InferLongArgs)
         .arg(Arg::new(options::FILE).default_value("-").hide(true))
 }
 

src/uu/tty/src/tty.rs

@@ -9,7 +9,7 @@
 
 // spell-checker:ignore (ToDO) ttyname filedesc
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::ffi::CStr;
 use std::io::Write;
 use uucore::error::{UResult, UUsageError};
@@ -75,6 +75,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::SILENT)
                 .long(options::SILENT)

src/uu/uname/src/uname.rs

@@ -10,7 +10,7 @@
 
 // spell-checker:ignore (ToDO) nodename kernelname kernelrelease kernelversion sysname hwplatform mnrsv
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use platform_info::*;
 use uucore::error::{FromIo, UResult};
 
@@ -122,6 +122,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(Arg::new(options::ALL)
             .short('a')
             .long(options::ALL)

src/uu/unexpand/src/unexpand.rs

@@ -11,7 +11,7 @@
 
 #[macro_use]
 extern crate uucore;
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::fs::File;
 use std::io::{stdin, stdout, BufRead, BufReader, BufWriter, Read, Stdout, Write};
 use std::str::from_utf8;
@@ -108,6 +108,7 @@ pub fn uu_app<'a>() -> App<'a> {
         .version(crate_version!())
         .override_usage(USAGE)
         .about(SUMMARY)
+        .setting(AppSettings::InferLongArgs)
         .arg(Arg::new(options::FILE).hide(true).multiple_occurrences(true))
         .arg(
             Arg::new(options::ALL)

src/uu/uniq/src/uniq.rs

@@ -5,7 +5,7 @@
 //  * For the full copyright and license information, please view the LICENSE
 //  * file that was distributed with this source code.
 
-use clap::{crate_version, App, Arg, ArgMatches};
+use clap::{crate_version, App, AppSettings, Arg, ArgMatches};
 use std::fs::File;
 use std::io::{self, stdin, stdout, BufRead, BufReader, BufWriter, Read, Write};
 use std::path::Path;
@@ -303,6 +303,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::ALL_REPEATED)
                 .short('D')

src/uu/unlink/src/unlink.rs

@@ -10,7 +10,7 @@
 use std::fs::remove_file;
 use std::path::Path;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 
 use uucore::display::Quotable;
 use uucore::error::{FromIo, UResult};
@@ -31,6 +31,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(OPT_PATH)
                 .required(true)

src/uu/uptime/src/uptime.rs

@@ -9,7 +9,7 @@
 // spell-checker:ignore (ToDO) getloadavg upsecs updays nusers loadavg boottime uphours upmins
 
 use chrono::{Local, TimeZone, Utc};
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 
 // import crate time from utmpx
 pub use uucore::libc;
@@ -66,6 +66,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::SINCE)
                 .short('s')

src/uu/users/src/users.rs

@@ -10,7 +10,7 @@
 
 use std::path::Path;
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use uucore::error::UResult;
 use uucore::utmpx::{self, Utmpx};
 
@@ -68,5 +68,6 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(Arg::new(ARG_FILES).takes_value(true).max_values(1))
 }

src/uu/wc/src/wc.rs

@@ -17,7 +17,7 @@ use unicode_width::UnicodeWidthChar;
 use utf8::{BufReadDecoder, BufReadDecoderError};
 use word_count::{TitledWordCount, WordCount};
 
-use clap::{crate_version, App, Arg, ArgMatches};
+use clap::{crate_version, App, AppSettings, Arg, ArgMatches};
 
 use std::cmp::max;
 use std::fs::{self, File};
@@ -166,6 +166,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::BYTES)
                 .short('c')

src/uu/who/src/who.rs

@@ -12,7 +12,7 @@ use uucore::error::{FromIo, UResult};
 use uucore::libc::{ttyname, STDIN_FILENO, S_IWGRP};
 use uucore::utmpx::{self, time, Utmpx};
 
-use clap::{crate_version, App, Arg};
+use clap::{crate_version, App, AppSettings, Arg};
 use std::borrow::Cow;
 use std::ffi::CStr;
 use std::os::unix::fs::MetadataExt;
@@ -165,6 +165,7 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
         .arg(
             Arg::new(options::ALL)
                 .long(options::ALL)

src/uu/whoami/src/whoami.rs

@@ -10,7 +10,7 @@
 #[macro_use]
 extern crate clap;
 
-use clap::App;
+use clap::{App, AppSettings};
 
 use uucore::display::println_verbatim;
 use uucore::error::{FromIo, UResult};
@@ -31,4 +31,5 @@ pub fn uu_app<'a>() -> App<'a> {
     App::new(uucore::util_name())
         .version(crate_version!())
         .about(ABOUT)
+        .setting(AppSettings::InferLongArgs)
 }

src/uu/yes/src/yes.rs

@@ -13,7 +13,7 @@ use std::io::{self, Write};
 #[macro_use]
 extern crate clap;
 
-use clap::{App, Arg};
+use clap::{App, AppSettings, Arg};
 use uucore::error::{UResult, USimpleError};
 
 #[cfg(any(target_os = "linux", target_os = "android"))]
@@ -47,7 +47,9 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
 }
 
 pub fn uu_app<'a>() -> App<'a> {
-    app_from_crate!().arg(Arg::new("STRING").index(1).multiple_occurrences(true))
+    app_from_crate!()
+        .arg(Arg::new("STRING").index(1).multiple_occurrences(true))
+        .setting(AppSettings::InferLongArgs)
 }
 
 fn prepare_buffer<'a>(input: &'a str, buffer: &'a mut [u8; BUF_SIZE]) -> &'a [u8] {