Let's say I want to write a shell script that operates on the
currently focused pane, to be executed with 'run-shell'. The only way
to do that for now is to call 'tmux list-panes' inside the script and
parse the output to determine the active pane. This patches modifies
run-shell to expand tmux #{variables} in the command string, so data
about tmux can be passed to run-shell commands.
This is implemented in Thomas Adams hook-support branch, but as shown
above, it is useful without hooks support.
Since Thomas can't foresee when he will merge hook-support, and I
would like to see this feature in the next version, here it goes.
---
cmd-run-shell.c | 19 +++++++++++++++----
tmux.1 | 2 ++
2 files changed, 17 insertions(+), 4 deletions(-)
diff --git a/cmd-run-shell.c b/cmd-run-shell.c
index 9b4c006..d25c5e6 100644
--- a/cmd-run-shell.c
+++ b/cmd-run-shell.c
@@ -75,20 +75,31 @@ cmd_run_shell_exec(struct cmd *self, struct cmd_ctx *ctx)
{
struct args *args = self->args;
struct cmd_run_shell_data *cdata;
- const char *shellcmd = args->argv[0];
+ const char *shellcmd;
+ struct session *s;
+ struct winlink *wl;
struct window_pane *wp;
+ struct format_tree *ft;
- if (cmd_find_pane(ctx, args_get(args, 't'), NULL, &wp) == NULL)
+ wl = cmd_find_pane(ctx, args_get(args, 't'), &s, &wp);
+ if (wl == NULL)
return (CMD_RETURN_ERROR);
+ ft = format_create();
+ format_session(ft, s);
+ format_winlink(ft, s, wl);
+ format_window_pane(ft, wp);
+ shellcmd = format_expand(ft, args->argv[0]);
+
cdata = xmalloc(sizeof *cdata);
- cdata->cmd = xstrdup(args->argv[0]);
+ cdata->cmd = xstrdup(shellcmd);
cdata->wp_id = wp->id;
-
cdata->ctx = ctx;
cmd_ref_ctx(ctx);
job_run(shellcmd, cmd_run_shell_callback, cmd_run_shell_free, cdata);
+ format_free(ft);
+ free(shellcmd);
return (CMD_RETURN_YIELD); /* don't let client exit */
}
diff --git a/tmux.1 b/tmux.1
index 882a71f..ada931a 100644
--- a/tmux.1
+++ b/tmux.1
@@ -3490,6 +3490,8 @@ option.
Execute
.Ar shell-command
in the background without creating a window.
+The command string is expanded using the rules specified in the FORMATS
+section.
After it finishes, any output to stdout is displayed in copy mode (in the pane
specified by
.Fl t
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