Add hint about separating inputs from options with -- (fixes #113) (#119)

README.md

@@ -189,7 +189,8 @@ OPTIONS:
 ARGS:
     <inputs>...    The inputs (where to get links to check from). These can be: files (e.g. `README.md`), file globs
                    (e.g. `"~/git/*/README.md"`), remote URLs (e.g. `https://example.com/README.md`) or standard
-                   input (`-`) [default: README.md]
+                   input (`-`). Prefix with `--` to separate inputs from options that allow multiple arguments
+                   [default: README.md]
 ```
 
 ### Exit codes

src/bin/lychee/options.rs

@@ -84,6 +84,7 @@ pub(crate) struct LycheeOptions {
     /// The inputs (where to get links to check from).
     /// These can be: files (e.g. `README.md`), file globs (e.g. `"~/git/*/README.md"`),
     /// remote URLs (e.g. `https://example.com/README.md`) or standard input (`-`).
+    /// Prefix with `--` to separate inputs from options that allow multiple arguments.
     #[structopt(name = "inputs", default_value = "README.md")]
     raw_inputs: Vec<String>,
 

src/collector.rs

@@ -92,7 +92,7 @@ impl Input {
                 }
             }
             Stdin => Ok(vec![Self::stdin_content(file_type_hint).await?]),
-            String(s) => Ok(vec![Self::string_content(s, file_type_hint)?]),
+            String(s) => Ok(vec![Self::string_content(s, file_type_hint)]),
         }
     }
 
@@ -152,11 +152,8 @@ impl Input {
         Ok(input_content)
     }
 
-    fn string_content(s: &str, file_type_hint: Option<FileType>) -> Result<InputContent> {
-        Ok(InputContent::from_string(
-            s,
-            file_type_hint.unwrap_or_default(),
-        ))
+    fn string_content(s: &str, file_type_hint: Option<FileType>) -> InputContent {
+        InputContent::from_string(s, file_type_hint.unwrap_or_default())
     }
 }