Fix typo in error message

It said “(Choices: (choices: this, that, other))” instead of “(choices: this, that, other)”. Also improve the same error elsewhere: options more have ‘settings’ than ‘values’.

src/options/misfire.rs

@@ -14,7 +14,7 @@ pub struct Choices(&'static [&'static str]);
 
 impl fmt::Display for Choices {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "(choices: {})", self.0.join(", "))
+        write!(f, "choices: {}", self.0.join(", "))
     }
 }
 
@@ -91,7 +91,7 @@ impl fmt::Display for Misfire {
         use self::Misfire::*;
 
         match *self {
-            BadArgument(ref a, ref b, ref c) => write!(f, "Option {} has no value {:?} (Choices: {})", a, b, c),
+            BadArgument(ref a, ref b, ref c) => write!(f, "Option {} has no {:?} setting ({})", a, b, c),
             InvalidOptions(ref e)            => write!(f, "{}", e),
             Help(ref text)                   => write!(f, "{}", text),
             Version(ref version)             => write!(f, "{}", version),

xtests/error_setting

@@ -0,0 +1 @@
+Option --time-style has no "24" setting (choices: default, long-iso, full-iso, iso)

xtests/run.sh

@@ -252,13 +252,14 @@ EXA_COLORS="di=38;5;195:fi=38;5;250:xx=38;5;237:ur=38;5;194:uw=38;5;193:ux=38;5;
 EXA_COLORS="reset" $exa $testcases/file-names-exts -1  2>&1 | diff -q - $results/themed_un  || exit 1
 
 # Errors
-$exa --binary     2>&1 | diff -q - $results/error_useless     || exit 1
-$exa --ternary    2>&1 | diff -q - $results/error_long        || exit 1
-$exa -4           2>&1 | diff -q - $results/error_short       || exit 1
-$exa --time       2>&1 | diff -q - $results/error_value       || exit 1
-$exa --long=time  2>&1 | diff -q - $results/error_overvalued  || exit 1
-$exa -l --long    2>&1 | diff -q - $results/error_duplicate   || exit 1
-$exa -ll          2>&1 | diff -q - $results/error_twice       || exit 1
+$exa --binary           2>&1 | diff -q - $results/error_useless     || exit 1
+$exa --ternary          2>&1 | diff -q - $results/error_long        || exit 1
+$exa -4                 2>&1 | diff -q - $results/error_short       || exit 1
+$exa --time             2>&1 | diff -q - $results/error_value       || exit 1
+$exa --long=time        2>&1 | diff -q - $results/error_overvalued  || exit 1
+$exa -l --long          2>&1 | diff -q - $results/error_duplicate   || exit 1
+$exa -ll                2>&1 | diff -q - $results/error_twice       || exit 1
+$exa -l --time-style=24 2>&1 | diff -q - $results/error_setting     || exit 1
 
 
 # Debug mode