clean: remove operations not actively used

README.md

@@ -79,7 +79,7 @@ command = "world"
 # you can add as many `[[match_err]]` section as you want
 [[match_err]]
 # the suggestion of this section will be used for the following patterns of the error output
-# note that the error is formatted to lowercase without extra spaces
+# note that the error is formatted to lowercase
 pattern = [
 	"pattern 1",
 	"pattern 2"

src/shell.rs

@@ -26,22 +26,9 @@ pub fn command_output(shell: &str, command: &str) -> String {
 	});
 
 	match receiver.recv_timeout(Duration::from_secs(3)) {
-		Ok(output) => {
+		Ok(output) => match output.stderr.is_empty() {
-			if !output.stderr.is_empty() {
+			true => String::from_utf8_lossy(&output.stdout).to_lowercase(),
-				String::from_utf8_lossy(&output.stderr)
+			false => String::from_utf8_lossy(&output.stderr).to_lowercase(),
-					.to_string()
-					.split_whitespace()
-					.collect::<Vec<&str>>()
-					.join(" ")
-					.to_lowercase()
-			} else {
-				String::from_utf8_lossy(&output.stdout)
-					.to_string()
-					.split_whitespace()
-					.collect::<Vec<&str>>()
-					.join(" ")
-					.to_lowercase()
-			}
 		}
 		Err(_) => {
 			use colored::*;

src/suggestions.rs

@@ -243,7 +243,10 @@ pub fn confirm_suggestion(shell: &str, command: &str, highlighted: &str) -> Resu
 				.env("LC_ALL", "C")
 				.output()
 				.expect("failed to execute process");
-			let error_msg = String::from_utf8_lossy(&process.stderr);
+			let error_msg = match process.stderr.is_empty() {
+				true => String::from_utf8_lossy(&process.stdout),
+				false => String::from_utf8_lossy(&process.stderr),
+			};
 			return Err(error_msg.to_string());
 		}
 	}
@@ -273,7 +276,10 @@ pub fn confirm_suggestion(shell: &str, command: &str, highlighted: &str) -> Resu
 			.env("LC_ALL", "C")
 			.output()
 			.expect("failed to execute process");
-		let error_msg = String::from_utf8_lossy(&process.stderr);
+		let error_msg = match process.stderr.is_empty() {
+			true => String::from_utf8_lossy(&process.stdout),
+			false => String::from_utf8_lossy(&process.stderr),
+		};
 		Err(error_msg.to_string())
 	}
 }