Undo: ignore empty change and keep tx boundaries
diff --git a/src/undo.rs b/src/undo.rs
index 8e5b423..b7b887f 100644
--- a/src/undo.rs
+++ b/src/undo.rs
@@ -151,9 +151,12 @@
self.undos.push(last_change);
}
- pub fn insert_str<S: Into<String> + Debug>(&mut self, idx: usize, string: S) {
+ pub fn insert_str<S: AsRef<str> + Into<String> + Debug>(&mut self, idx: usize, string: S) {
debug!(target: "rustyline", "Changeset::insert_str({}, {:?})", idx, string);
self.redos.clear();
+ if string.as_ref().is_empty() {
+ return;
+ }
self.undos.push(Change::Insert {
idx,
text: string.into(),
@@ -163,6 +166,9 @@
pub fn delete<S: AsRef<str> + Into<String> + Debug>(&mut self, indx: usize, string: S) {
debug!(target: "rustyline", "Changeset::delete({}, {:?})", indx, string);
self.redos.clear();
+ if string.as_ref().is_empty() {
+ return;
+ }
if !Self::single_char(string.as_ref())
|| !self.undos
@@ -246,10 +252,10 @@
}
_ => {
change.undo(line);
- self.redos.push(change);
undone = true;
}
};
+ self.redos.push(change);
} else {
break;
}
@@ -280,10 +286,10 @@
}
_ => {
change.redo(line);
- self.undos.push(change);
redone = true;
}
};
+ self.undos.push(change);
} else {
break;
}
