# HG changeset patch
# User Raphaël Gomès <rgomes@octobus.net>
# Date 1698936613 -3600
# Node ID a8ca22119385facc1d17813272ab0ed044330ffe
# Parent  2966b88d45317aed8a95397b58c999c70cb81074
rust-index: add support for `del index[r]`

Only the `del index[r:]` syntax was supported, but the comment said otherwise.
It's not actually used in core code, but the C index supports it.

diff -r 2966b88d4531 -r a8ca22119385 rust/hg-cpython/src/revlog.rs
--- a/rust/hg-cpython/src/revlog.rs	Mon Oct 30 21:26:17 2023 +0100
+++ b/rust/hg-cpython/src/revlog.rs	Thu Nov 02 15:50:13 2023 +0100
@@ -214,8 +214,12 @@
 
     def __delitem__(&self, key: PyObject) -> PyResult<()> {
         // __delitem__ is both for `del idx[r]` and `del idx[r1:r2]`
-        let start = key.getattr(py, "start")?;
-        let start = UncheckedRevision(start.extract(py)?);
+        let start = if let Ok(rev) = key.extract(py) {
+            UncheckedRevision(rev)
+        } else {
+            let start = key.getattr(py, "start")?;
+            UncheckedRevision(start.extract(py)?)
+        };
         let start = self.index(py)
             .borrow()
             .check_revision(start)