From 27dc1bcacb24b190a9afd767fa49a1161202fc6b Mon Sep 17 00:00:00 2001
From: Dylan Baker <dylan@pnwbakers.com>
Date: Tue, 23 Apr 2024 09:35:37 -0700
Subject: [PATCH] backend/ninja: use re.match instead of re.search

Since we've already determined that the first character is the start of
the expression anyway.
---
 mesonbuild/backend/ninjabackend.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mesonbuild/backend/ninjabackend.py b/mesonbuild/backend/ninjabackend.py
index 228312d55..2b4a0cf97 100644
--- a/mesonbuild/backend/ninjabackend.py
+++ b/mesonbuild/backend/ninjabackend.py
@@ -199,7 +199,7 @@ class NinjaRule:
                 # shell constructs shouldn't be shell quoted
                 return NinjaCommandArg(c, Quoting.notShell)
             if c.startswith('$'):
-                varp = re.search(r'\$\{?(\w*)\}?', c)
+                varp = re.match(r'\$\{?(\w*)\}?', c)
                 assert varp is not None, 'for mypy'
                 var: str = varp.group(1)
                 if var not in raw_names: