Merge pull request #371 from epage/clear

feat(redact): Expose clear_unused

crates/snapbox/src/filter/pattern.rs

@@ -585,7 +585,7 @@ fn line_matches(mut actual: &str, expected: &str, redactions: &Redactions) -> bo
         return true;
     }
 
-    let expected = redactions.clear(expected);
+    let expected = redactions.clear_unused(expected);
     let mut sections = expected.split("[..]").peekable();
     while let Some(section) = sections.next() {
         if let Some(remainder) = actual.strip_prefix(section) {

crates/snapbox/src/filter/redactions.rs

@@ -133,7 +133,12 @@ impl Redactions {
         input
     }
 
-    pub(crate) fn clear<'v>(&self, pattern: &'v str) -> Cow<'v, str> {
+    /// Clear unused redactions from expected data
+    ///
+    /// Some redactions can be conditionally present, like redacting [`std::env::consts::EXE_SUFFIX`].
+    /// When the redaction is not present, it needs to be removed from the expected data so it can
+    /// be matched against the actual data.
+    pub fn clear_unused<'v>(&self, pattern: &'v str) -> Cow<'v, str> {
         if !self.unused.as_ref().map(|s| s.is_empty()).unwrap_or(false) && pattern.contains('[') {
             let mut pattern = pattern.to_owned();
             replace_many(