rebase: Support preserving merges in non-interactive mode

diff --git a/run-command.c b/run-command.c
index a3b28a64dc2d1b888b0ba2a135be10fe04651201..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 {
@@ -304,6 +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));