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echo: reorder of match patterns

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People write \n \t and \r \v much more
often than other escape sequences, so
it makes more sense to optimise for common
case, as match scans from top to bottom.
This commit is contained in:
Bulat Musin
2018-01-06 17:01:50 +03:00
parent 7ebda2de44
commit 26ad240572
1 changed files with 4 additions and 4 deletions
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src/echo/echo.rs
+4 -4
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@@ -105,15 +105,15 @@ pub fn uumain(args: Vec<String>) -> i32 {
prev_was_slash = false;
match c {
'\\' => print!("\\"),
'n' => print!("\n"),
'r' => print!("\r"),
't' => print!("\t"),
'v' => print!("\x0B"),
'a' => print!("\x07"),
'b' => print!("\x08"),
'c' => break,
'e' => print!("\x1B"),
'f' => print!("\x0C"),
'n' => print!("\n"),
'r' => print!("\r"),
't' => print!("\t"),
'v' => print!("\x0B"),
'x' => {
let (c, num_char_used) = convert_str(string.as_bytes(), index + 1, 16);
if num_char_used == 0 {