rebase: Support preserving merges in non-interactive mode

diff --git a/run-command.c b/run-command.c
index 6e29fdf9e2968900d21ea48b992f292204621f19..caab374577e02e9a33cd8095b8da9234acb065f8 100644 (file)
--- a/run-command.c
+++ b/run-command.c
@@ -68,6 +68,7 @@ int start_command(struct child_process *cmd)
        trace_argv_printf(cmd->argv, "trace: run_command:");
 
 #ifndef __MINGW32__
+       fflush(NULL);
        cmd->pid = fork();
        if (!cmd->pid) {
                if (cmd->no_stdin)
@@ -110,6 +111,8 @@ int start_command(struct child_process *cmd)
                                        unsetenv(*cmd->env);
                        }
                }
+               if (cmd->preexec_cb)
+                       cmd->preexec_cb();
                if (cmd->git_cmd) {
                        execv_git_cmd(cmd->argv);
                } else {
@@ -119,9 +122,8 @@ int start_command(struct child_process *cmd)
        }
 #else
        int s0 = -1, s1 = -1, s2 = -1;  /* backups of stdin, stdout, stderr */
-       const char *sargv0 = cmd->argv[0];
+       const char **sargv = cmd->argv;
        char **env = environ;
-       struct strbuf git_cmd;
 
        if (cmd->no_stdin) {
                s0 = dup(0);
@@ -165,9 +167,7 @@ int start_command(struct child_process *cmd)
        }
 
        if (cmd->git_cmd) {
-               strbuf_init(&git_cmd, 0);
-               strbuf_addf(&git_cmd, "git-%s", cmd->argv[0]);
-               cmd->argv[0] = git_cmd.buf;
+               cmd->argv = prepare_git_cmd(cmd->argv);
        }
 
        cmd->pid = mingw_spawnvpe(cmd->argv[0], cmd->argv, env);
@@ -175,9 +175,9 @@ int start_command(struct child_process *cmd)
        if (cmd->env)
                free_environ(env);
        if (cmd->git_cmd)
-               strbuf_release(&git_cmd);
+               free(cmd->argv);
 
-       cmd->argv[0] = sargv0;
+       cmd->argv = sargv;
        if (s0 >= 0)
                dup2(s0, 0), close(s0);
        if (s1 >= 0)
@@ -307,6 +307,9 @@ int start_async(struct async *async)
        async->out = pipe_out[0];
 
 #ifndef __MINGW32__
+       /* Flush stdio before fork() to avoid cloning buffers */
+       fflush(NULL);
+
        async->pid = fork();
        if (async->pid < 0) {
                error("fork (async) failed: %s", strerror(errno));