basic: add replace_env_n function

It's like replace_env, but lets you pass in a substring.

1 files changed, 5 insertions, 1 deletions

diff --git a/src/basic/env-util.h b/src/basic/env-util.h
index 03bbc6af00..43a1371f5e 100644
--- a/src/basic/env-util.h
+++ b/src/basic/env-util.h
@@ -34,9 +34,13 @@ enum {
         REPLACE_ENV_ALLOW_BRACELESS = 2u,
 };
 
-char *replace_env(const char *format, char **env, unsigned flags);
+char *replace_env_n(const char *format, size_t n, char **env, unsigned flags);
 char **replace_env_argv(char **argv, char **env);
 
+static inline char *replace_env(const char *format, char **env, unsigned flags) {
+        return replace_env_n(format, strlen(format), env, flags);
+}
+
 bool strv_env_is_valid(char **e);
 #define strv_env_clean(l) strv_env_clean_with_callback(l, NULL, NULL)
 char **strv_env_clean_with_callback(char **l, void (*invalid_callback)(const char *p, void *userdata), void *userdata);