--disable option to turn bultin matchers off

src/main.rs

@@ -103,6 +103,13 @@ fn app_args<'a>() -> clap::ArgMatches<'a> {
         .default_value("left")
         .short("p"),
     )
+    .arg(
+      Arg::with_name("disable")
+        .help("Disable a default pattern")
+        .long("disable")
+        .takes_value(true)
+        .multiple(true)
+    )
     .arg(
       Arg::with_name("regexp")
         .help("Use this regexp as extra pattern to match")
@@ -142,6 +149,8 @@ fn main() {
   } else {
     [].to_vec()
   };
+  let disable = args.values_of("disable")
+    .map(|x| x.collect::<Vec<_>>()).unwrap_or_default();
 
   let foreground_color = colors::get_color(args.value_of("foreground_color").unwrap());
   let background_color = colors::get_color(args.value_of("background_color").unwrap());
@@ -165,7 +174,7 @@ fn main() {
     }
   ).collect();
 
-  let mut state = state::State::new(&lines, &unescaped, alphabet, &regexp);
+  let mut state = state::State::new_with_exclude(&lines, &unescaped, alphabet, &regexp, &disable);
 
   let selected = {
     let mut viewbox = view::View::new(

src/state.rs

@@ -55,6 +55,7 @@ pub struct State<'a> {
   pub unescaped: &'a Vec<String>,
   alphabet: &'a str,
   regexp: &'a Vec<&'a str>,
+  exclude_default: &'a [&'a str]
 }
 
 impl<'a> State<'a> {
@@ -64,6 +65,17 @@ impl<'a> State<'a> {
       unescaped,
       alphabet,
       regexp,
+      exclude_default: &[]
+    }
+  }
+
+  pub fn new_with_exclude(lines: &'a Vec<&'a str>, unescaped: &'a Vec<String>, alphabet: &'a str, regexp: &'a Vec<&'a str>, exclude_default: &'a [&'a str]) -> State<'a> {
+    State {
+      lines,
+      unescaped,
+      alphabet,
+      regexp,
+      exclude_default,
     }
   }
 
@@ -72,6 +84,7 @@ impl<'a> State<'a> {
 
     let exclude_patterns = EXCLUDE_PATTERNS
       .iter()
+      .filter(|(name, _)| !self.exclude_default.contains(name))
       .map(|tuple| (tuple.0, Regex::new(tuple.1).unwrap()))
       .collect::<Vec<_>>();
 
@@ -83,6 +96,7 @@ impl<'a> State<'a> {
 
     let patterns = PATTERNS
       .iter()
+      .filter(|(name, _)| !self.exclude_default.contains(name))
       .map(|tuple| (tuple.0, Regex::new(tuple.1).unwrap()))
       .collect::<Vec<_>>();
 

src/swapper.rs

@@ -186,6 +186,10 @@ impl<'a> Swapper<'a> {
             return vec!["--regexp".to_string(), format!("'{}'", value.replace("\\\\", "\\"))];
           }
 
+          if name.starts_with("disable") {
+            return vec!["--disable".to_owned(), value.to_owned()];
+          }
+
           vec![]
         } else {
           vec![]