From 773b3b134009e779ddb5fad9be7f00c1f8c2761b Mon Sep 17 00:00:00 2001
From: Sergey Kvachonok <ravenexp@gmail.com>
Date: Fri, 10 Dec 2021 15:07:16 +0300
Subject: [PATCH] Fix `upload::canonicalize_name()` regex subst

Python `Pattern.sub()` corresponds to Rust `Regex::replace_all()`,
not `Regex::replace()`.

This fixes a bug where the same Python package `a_b_c` is uploaded
as both `a-b-c` (wheel) and `a-b_c` (sdist).
---
 Changelog.md  | 1 +
 src/upload.rs | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/Changelog.md b/Changelog.md
index f0577c0c7..76fd6f9fc 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 * Fix docs for `new` and `init` commands in `maturin --help` in [#734](https://github.com/PyO3/maturin/pull/734)
 * Add support for x86_64 Haiku in [#735](https://github.com/PyO3/maturin/pull/735)
+* Fix sdist upload for packages where the pkgname contains multiple underscores in [#741](https://github.com/PyO3/maturin/pull/741)
 
 ## [0.12.4] - 2021-12-06
 
diff --git a/src/upload.rs b/src/upload.rs
index a7c8c7caf..f9342f316 100644
--- a/src/upload.rs
+++ b/src/upload.rs
@@ -198,7 +198,7 @@ fn complete_registry(opt: &PublishOpt) -> Result<Registry> {
 fn canonicalize_name(name: &str) -> String {
     Regex::new("[-_.]+")
         .unwrap()
-        .replace(name, "-")
+        .replace_all(name, "-")
         .to_lowercase()
 }