Merge branch 'ab/hook-api-with-stdin'

Extend the run-hooks API to allow feeding data from the standard
input when running the hook script(s).

* ab/hook-api-with-stdin:
  hook: support a --to-stdin=<path> option
  sequencer: use the new hook API for the simpler "post-rewrite" call
  hook API: support passing stdin to hooks, convert am's 'post-rewrite'
  run-command: allow stdin for run_processes_parallel
  run-command.c: remove dead assignment in while-loop

1 files changed, 5 insertions, 0 deletions

diff --git a/hook.c b/hook.c
index a4fa1031f2..1a84831863 100644
--- a/hook.c
+++ b/hook.c
@@ -55,6 +55,11 @@ static int pick_next_hook(struct child_process *cp,
 
 	cp->no_stdin = 1;
 	strvec_pushv(&cp->env, hook_cb->options->env.v);
+	/* reopen the file for stdin; run_command closes it. */
+	if (hook_cb->options->path_to_stdin) {
+		cp->no_stdin = 0;
+		cp->in = xopen(hook_cb->options->path_to_stdin, O_RDONLY);
+	}
 	cp->stdout_to_stderr = 1;
 	cp->trace2_hook_name = hook_cb->hook_name;
 	cp->dir = hook_cb->options->dir;