diff --git a/helix-term/src/ui/fuzzy_match.rs b/helix-term/src/ui/fuzzy_match.rs
new file mode 100644
index 00000000..e25d7328
--- /dev/null
+++ b/helix-term/src/ui/fuzzy_match.rs
@@ -0,0 +1,74 @@
+use fuzzy_matcher::skim::SkimMatcherV2 as Matcher;
+use fuzzy_matcher::FuzzyMatcher;
+
+#[cfg(test)]
+mod test;
+
+pub struct FuzzyQuery {
+ queries: Vec<String>,
+}
+
+impl FuzzyQuery {
+ pub fn new(query: &str) -> FuzzyQuery {
+ let mut saw_backslash = false;
+ let queries = query
+ .split(|c| {
+ saw_backslash = match c {
+ ' ' if !saw_backslash => return true,
+ '\\' => true,
+ _ => false,
+ };
+ false
+ })
+ .filter_map(|query| {
+ if query.is_empty() {
+ None
+ } else {
+ Some(query.replace("\\ ", " "))
+ }
+ })
+ .collect();
+ FuzzyQuery { queries }
+ }
+
+ pub fn fuzzy_match(&self, item: &str, matcher: &Matcher) -> Option<i64> {
+ // use the rank of the first query for the rank, because merging ranks is not really possible
+ // this behaviour matches fzf and skim
+ let score = matcher.fuzzy_match(item, self.queries.get(0)?)?;
+ if self
+ .queries
+ .iter()
+ .any(|query| matcher.fuzzy_match(item, query).is_none())
+ {
+ return None;
+ }
+ Some(score)
+ }
+
+ pub fn fuzzy_indicies(&self, item: &str, matcher: &Matcher) -> Option<(i64, Vec<usize>)> {
+ if self.queries.len() == 1 {
+ return matcher.fuzzy_indices(item, &self.queries[0]);
+ }
+
+ // use the rank of the first query for the rank, because merging ranks is not really possible
+ // this behaviour matches fzf and skim
+ let (score, mut indicies) = matcher.fuzzy_indices(item, self.queries.get(0)?)?;
+
+ // fast path for the common case of not using a space
+ // during matching this branch should be free thanks to branch prediction
+ if self.queries.len() == 1 {
+ return Some((score, indicies));
+ }
+
+ for query in &self.queries[1..] {
+ let (_, matched_indicies) = matcher.fuzzy_indices(item, query)?;
+ indicies.extend_from_slice(&matched_indicies);
+ }
+
+ // deadup and remove duplicate matches
+ indicies.sort_unstable();
+ indicies.dedup();
+
+ Some((score, indicies))
+ }
+}
diff --git a/helix-term/src/ui/fuzzy_match/test.rs b/helix-term/src/ui/fuzzy_match/test.rs
new file mode 100644
index 00000000..3f90ef68
--- /dev/null
+++ b/helix-term/src/ui/fuzzy_match/test.rs
@@ -0,0 +1,47 @@
+use crate::ui::fuzzy_match::FuzzyQuery;
+use crate::ui::fuzzy_match::Matcher;
+
+fn run_test<'a>(query: &str, items: &'a [&'a str]) -> Vec<String> {
+ let query = FuzzyQuery::new(query);
+ let matcher = Matcher::default();
+ items
+ .iter()
+ .filter_map(|item| {
+ let (_, indicies) = query.fuzzy_indicies(item, &matcher)?;
+ let matched_string = indicies
+ .iter()
+ .map(|&pos| item.chars().nth(pos).unwrap())
+ .collect();
+ Some(matched_string)
+ })
+ .collect()
+}
+
+#[test]
+fn match_single_value() {
+ let matches = run_test("foo", &["foobar", "foo", "bar"]);
+ assert_eq!(matches, &["foo", "foo"])
+}
+
+#[test]
+fn match_multiple_values() {
+ let matches = run_test(
+ "foo bar",
+ &["foo bar", "foo bar", "bar foo", "bar", "foo"],
+ );
+ assert_eq!(matches, &["foobar", "foobar", "barfoo"])
+}
+
+#[test]
+fn space_escape() {
+ let matches = run_test(r"foo\ bar", &["bar foo", "foo bar", "foobar"]);
+ assert_eq!(matches, &["foo bar"])
+}
+
+#[test]
+fn trim() {
+ let matches = run_test(r" foo bar ", &["bar foo", "foo bar", "foobar"]);
+ assert_eq!(matches, &["barfoo", "foobar", "foobar"]);
+ let matches = run_test(r" foo bar\ ", &["bar foo", "foo bar", "foobar"]);
+ assert_eq!(matches, &["bar foo"])
+}
diff --git a/helix-term/src/ui/mod.rs b/helix-term/src/ui/mod.rs
index 8ab15bff..6ac4dbb7 100644
--- a/helix-term/src/ui/mod.rs
+++ b/helix-term/src/ui/mod.rs
@@ -1,5 +1,6 @@
mod completion;
pub(crate) mod editor;
+mod fuzzy_match;
mod info;
pub mod lsp;
mod markdown;
diff --git a/helix-term/src/ui/picker.rs b/helix-term/src/ui/picker.rs
index 49eb986b..ac97e3cc 100644
--- a/helix-term/src/ui/picker.rs
+++ b/helix-term/src/ui/picker.rs
@@ -1,7 +1,7 @@
use crate::{
compositor::{Component, Compositor, Context, Event, EventResult},
ctrl, key, shift,
- ui::{self, EditorView},
+ ui::{self, fuzzy_match::FuzzyQuery, EditorView},
};
use tui::{
buffer::Buffer as Surface,
@@ -9,7 +9,6 @@ use tui::{
};
use fuzzy_matcher::skim::SkimMatcherV2 as Matcher;
-use fuzzy_matcher::FuzzyMatcher;
use tui::widgets::Widget;
use std::time::Instant;
@@ -389,13 +388,14 @@ impl<T: Item> Picker<T> {
.map(|(index, _option)| (index, 0)),
);
} else if pattern.starts_with(&self.previous_pattern) {
+ let query = FuzzyQuery::new(pattern);
// optimization: if the pattern is a more specific version of the previous one
// then we can score the filtered set.
self.matches.retain_mut(|(index, score)| {
let option = &self.options[*index];
let text = option.sort_text(&self.editor_data);
- match self.matcher.fuzzy_match(&text, pattern) {
+ match query.fuzzy_match(&text, &self.matcher) {
Some(s) => {
// Update the score
*score = s;
@@ -408,6 +408,7 @@ impl<T: Item> Picker<T> {
self.matches
.sort_unstable_by_key(|(_, score)| Reverse(*score));
} else {
+ let query = FuzzyQuery::new(pattern);
self.matches.clear();
self.matches.extend(
self.options
@@ -423,8 +424,8 @@ impl<T: Item> Picker<T> {
let text = option.filter_text(&self.editor_data);
- self.matcher
- .fuzzy_match(&text, pattern)
+ query
+ .fuzzy_match(&text, &self.matcher)
.map(|score| (index, score))
}),
);
@@ -657,9 +658,8 @@ impl<T: Item + 'static> Component for Picker<T> {
}
let spans = option.label(&self.editor_data);
- let (_score, highlights) = self
- .matcher
- .fuzzy_indices(&String::from(&spans), self.prompt.line())
+ let (_score, highlights) = FuzzyQuery::new(self.prompt.line())
+ .fuzzy_indicies(&String::from(&spans), &self.matcher)
.unwrap_or_default();
spans.0.into_iter().fold(inner, |pos, span| {