ninjabackend: fix matching of empty strings

closes #7977
2020-11-13 15:14:15 +01:00 · 2020-11-13 15:14:15 +01:00 · 7d4d25353c
parent aeb995fdc6
commit 7d4d25353c
1 changed files with 1 additions and 1 deletions
--- a/mesonbuild/backend/ninjabackend.py
+++ b/mesonbuild/backend/ninjabackend.py
@ -266,7 +266,7 @@ class NinjaRule:
        # expand variables in command
        command = ' '.join([self._quoter(x) for x in self.command + self.args])
        estimate = len(command)
-        for m in re.finditer(r'(\${\w*}|\$\w*)?[^$]*', command):
+        for m in re.finditer(r'(\${\w+}|\$\w+)?[^$]*', command):
            if m.start(1) != -1:
                estimate -= m.end(1) - m.start(1) + 1
                chunk = m.group(1)