From 5ff10cac88a00d0f8b6ca48661c9ed4234b58da8 Mon Sep 17 00:00:00 2001
From: Tormod Gjeitnes Hellen <tormod.hellen@gmail.com>
Date: Sun, 8 Jul 2018 22:09:15 +0000
Subject: [PATCH] =?UTF-8?q?Add=20help=20quick=20guide=20when=20test=20laun?=
=?UTF-8?q?ched=20with=20no=20arguments,=20and=20document=20the=E2=80=A6?=
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---
members/builtins/src/test.rs | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/members/builtins/src/test.rs b/members/builtins/src/test.rs
index 90dc0f5c..63c9a0d2 100644
--- a/members/builtins/src/test.rs
+++ b/members/builtins/src/test.rs
@@ -16,6 +16,9 @@ DESCRIPTION
Tests the expressions given and returns an exit status of 0 if true, else 1.
OPTIONS
+ --help
+ prints this help text
+
-n STRING
the length of STRING is nonzero
@@ -111,6 +114,10 @@ AUTHOR
Written by Michael Murphy.
"#;
+const QUICK_GUIDE: &'static str =
+r#"Usage: test [EXPRESSION]
+Try 'test --help' for more information."#;
+
pub fn test(args: &[String]) -> Result<bool, String> {
let arguments = &args[1..];
evaluate_arguments(arguments)
@@ -148,7 +155,10 @@ fn evaluate_arguments(arguments: &[String]) -> Result<bool, String> {
evaluate_expression(arg, operator, right_arg)
})
}
- None => Ok(false),
+ None => {
+ println!("{}", QUICK_GUIDE);
+ Ok(false)
+ }
}
}
--
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