From 1c5349106582e836b889b9606be1a8c190cd0640 Mon Sep 17 00:00:00 2001
From: Pedro Nobre <me@pedrodesu.xyz>
Date: Sat, 4 Jul 2026 06:35:59 +0100
Subject: [PATCH 1/2] splice and eco_format now work on no_std. added a missing
 test for eco_format.

---
 Cargo.toml               |  2 +-
 src/string.rs            |  4 ++--
 src/vendor/vec/splice.rs |  3 +++
 tests/tests.rs           | 10 +++++++++-
 4 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index a3ff6f6..34615da 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,7 +12,7 @@ categories = ["data-structures", "no-std"]
 keywords = ["string", "vector", "sso", "cow"]
 
 [features]
-default = ["std"]
+default = []
 std = []
 
 [dependencies]
diff --git a/src/string.rs b/src/string.rs
index 756cb83..bbf7f3e 100644
--- a/src/string.rs
+++ b/src/string.rs
@@ -26,9 +26,9 @@ use crate::dynamic::{DynamicVec, InlineVec};
 #[clippy::format_args]
 macro_rules! eco_format {
     ($($tts:tt)*) => {{
-        use ::std::fmt::Write;
+        use ::core::fmt::Write;
         let mut s = $crate::EcoString::new();
-        ::std::write!(s, $($tts)*).unwrap();
+        ::core::write!(s, $($tts)*).unwrap();
         s
     }};
 }
diff --git a/src/vendor/vec/splice.rs b/src/vendor/vec/splice.rs
index 884f89a..29ce8bf 100644
--- a/src/vendor/vec/splice.rs
+++ b/src/vendor/vec/splice.rs
@@ -5,6 +5,9 @@
 use core::ptr;
 use core::slice;
 
+#[cfg(not(feature = "std"))]
+use alloc::vec::Vec;
+
 use crate::EcoVec;
 
 use super::Drain;
diff --git a/tests/tests.rs b/tests/tests.rs
index 79aa890..8ec6d01 100644
--- a/tests/tests.rs
+++ b/tests/tests.rs
@@ -10,7 +10,7 @@ use std::mem;
 use std::sync::atomic::{AtomicUsize, Ordering::*};
 
 use ecow::string::ToEcoString;
-use ecow::{eco_vec, EcoString, EcoVec};
+use ecow::{eco_format, eco_vec, EcoString, EcoVec};
 
 const ALPH: &str = "abcdefghijklmnopqrstuvwxyz";
 const LIMIT: usize = EcoString::INLINE_LIMIT;
@@ -371,6 +371,14 @@ fn test_array_from_vec() {
     assert_eq!(<[String; 0]>::try_from(EcoVec::new()).unwrap(), <[String; 0]>::default());
 }
 
+#[test]
+fn test_str_macro() {
+    assert_eq!(
+        eco_format!("Hello, {}! The secret number is {}.", "world".to_owned(), 42),
+        "Hello, world! The secret number is 42."
+    );
+}
+
 #[test]
 fn test_str_new() {
     // Test inline strings.

From 130e6eb08607c3ed4d13aed9a8379ebe61d8a457 Mon Sep 17 00:00:00 2001
From: Pedro Nobre <me@pedrodesu.xyz>
Date: Sat, 4 Jul 2026 06:36:50 +0100
Subject: [PATCH 2/2] added std flag back to default. small mistake

---
 Cargo.toml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Cargo.toml b/Cargo.toml
index 34615da..a3ff6f6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,7 +12,7 @@ categories = ["data-structures", "no-std"]
 keywords = ["string", "vector", "sso", "cow"]
 
 [features]
-default = []
+default = ["std"]
 std = []
 
 [dependencies]