From ef24de24a82fe681581cc130f342363c47c0969a Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Fri, 7 Jun 2024 07:48:48 +0200
Subject: Merging upstream version 1.75.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 vendor/itertools/src/peeking_take_while.rs | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

(limited to 'vendor/itertools/src/peeking_take_while.rs')

diff --git a/vendor/itertools/src/peeking_take_while.rs b/vendor/itertools/src/peeking_take_while.rs
index b3a9c5ccb..3a3722812 100644
--- a/vendor/itertools/src/peeking_take_while.rs
+++ b/vendor/itertools/src/peeking_take_while.rs
@@ -16,7 +16,18 @@ pub trait PeekingNext : Iterator {
     /// if `accept` returns true, return it as the next element,
     /// else None.
     fn peeking_next<F>(&mut self, accept: F) -> Option<Self::Item>
-        where F: FnOnce(&Self::Item) -> bool;
+        where Self: Sized,
+              F: FnOnce(&Self::Item) -> bool;
+}
+
+impl<'a, I> PeekingNext for &'a mut I
+    where I: PeekingNext,
+{
+    fn peeking_next<F>(&mut self, accept: F) -> Option<Self::Item>
+        where F: FnOnce(&Self::Item) -> bool
+    {
+        (*self).peeking_next(accept)
+    }
 }
 
 impl<I> PeekingNext for Peekable<I>
@@ -115,6 +126,18 @@ impl<'a, I, F> Iterator for PeekingTakeWhile<'a, I, F>
     }
 }
 
+impl<'a, I, F> PeekingNext for PeekingTakeWhile<'a, I, F>
+    where I: PeekingNext,
+          F: FnMut(&I::Item) -> bool,
+{
+    fn peeking_next<G>(&mut self, g: G) -> Option<Self::Item>
+        where G: FnOnce(&Self::Item) -> bool,
+    {
+        let f = &mut self.f;
+        self.iter.peeking_next(|r| f(r) && g(r))
+    }
+}
+
 // Some iterators are so lightweight we can simply clone them to save their
 // state and use that for peeking.
 macro_rules! peeking_next_by_clone {
-- 
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