ident: don't require calling prepare_fallback_ident first

diff --git a/ident.c b/ident.c
index 33bcf40644cdf23434a7cb622b6be71bb7cd867c..bce20e8652ee4959cfd1c576a90a322dfd6ef44d 100644 (file)
--- a/ident.c
+++ b/ident.c
@@ -505,6 +505,26 @@ int git_ident_config(const char *var, const char *value, void *data)
        return 0;
 }
 
+static void set_env_if(const char *key, const char *value, int *given, int bit)
+{
+       if ((*given & bit) || getenv(key))
+               return; /* nothing to do */
+       setenv(key, value, 0);
+       *given |= bit;
+}
+
+void prepare_fallback_ident(const char *name, const char *email)
+{
+       set_env_if("GIT_AUTHOR_NAME", name,
+                  &author_ident_explicitly_given, IDENT_NAME_GIVEN);
+       set_env_if("GIT_AUTHOR_EMAIL", email,
+                  &author_ident_explicitly_given, IDENT_MAIL_GIVEN);
+       set_env_if("GIT_COMMITTER_NAME", name,
+                  &committer_ident_explicitly_given, IDENT_NAME_GIVEN);
+       set_env_if("GIT_COMMITTER_EMAIL", email,
+                  &committer_ident_explicitly_given, IDENT_MAIL_GIVEN);
+}
+
 static int buf_cmp(const char *a_begin, const char *a_end,
                   const char *b_begin, const char *b_end)
 {