From 71fc9f3ee8753a2bb163c85c784936a8d6d3e0ac Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Wed, 7 Apr 2021 12:50:12 +0000
Subject: Add a current_file format for the config file being parsed.
 Originally suggested by kn@, also GitHub issue 2638.

---
 cfg.c       | 20 ++++++++++++++++++--
 cmd-queue.c |  2 +-
 tmux.1      |  1 +
 3 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/cfg.c b/cfg.c
index 55c91bc4..cf6117f4 100644
--- a/cfg.c
+++ b/cfg.c
@@ -103,6 +103,7 @@ load_cfg(const char *path, struct client *c, struct cmdq_item *item, int flags,
 	struct cmd_parse_input	 pi;
 	struct cmd_parse_result	*pr;
 	struct cmdq_item	*new_item0;
+	struct cmdq_state	*state;
 
 	if (new_item != NULL)
 		*new_item = NULL;
@@ -136,12 +137,19 @@ load_cfg(const char *path, struct client *c, struct cmdq_item *item, int flags,
 		return (0);
 	}
 
-	new_item0 = cmdq_get_command(pr->cmdlist, NULL);
+	if (item != NULL)
+		state = cmdq_copy_state(cmdq_get_state(item));
+	else
+		state = cmdq_new_state(NULL, NULL, 0);
+	cmdq_add_format(state, "current_file", "%s", pi.file);
+
+	new_item0 = cmdq_get_command(pr->cmdlist, state);
 	if (item != NULL)
 		new_item0 = cmdq_insert_after(item, new_item0);
 	else
 		new_item0 = cmdq_append(NULL, new_item0);
 	cmd_list_free(pr->cmdlist);
+	cmdq_free_state(state);
 
 	if (new_item != NULL)
 		*new_item = new_item0;
@@ -156,6 +164,7 @@ load_cfg_from_buffer(const void *buf, size_t len, const char *path,
 	struct cmd_parse_input	 pi;
 	struct cmd_parse_result	*pr;
 	struct cmdq_item	*new_item0;
+	struct cmdq_state	*state;
 
 	if (new_item != NULL)
 		*new_item = NULL;
@@ -182,12 +191,19 @@ load_cfg_from_buffer(const void *buf, size_t len, const char *path,
 		return (0);
 	}
 
-	new_item0 = cmdq_get_command(pr->cmdlist, NULL);
+	if (item != NULL)
+		state = cmdq_copy_state(cmdq_get_state(item));
+	else
+		state = cmdq_new_state(NULL, NULL, 0);
+	cmdq_add_format(state, "current_file", "%s", pi.file);
+
+	new_item0 = cmdq_get_command(pr->cmdlist, state);
 	if (item != NULL)
 		new_item0 = cmdq_insert_after(item, new_item0);
 	else
 		new_item0 = cmdq_append(NULL, new_item0);
 	cmd_list_free(pr->cmdlist);
+	cmdq_free_state(state);
 
 	if (new_item != NULL)
 		*new_item = new_item0;
diff --git a/cmd-queue.c b/cmd-queue.c
index 05f439f5..a0d80c34 100644
--- a/cmd-queue.c
+++ b/cmd-queue.c
@@ -276,7 +276,7 @@ cmdq_merge_formats(struct cmdq_item *item, struct format_tree *ft)
 	const struct cmd_entry	*entry;
 
 	if (item->cmd != NULL) {
-		entry = cmd_get_entry (item->cmd);
+		entry = cmd_get_entry(item->cmd);
 		format_add(ft, "command", "%s", entry->name);
 	}
 	if (item->state->formats != NULL)
diff --git a/tmux.1 b/tmux.1
index d76cadd3..00b5cd84 100644
--- a/tmux.1
+++ b/tmux.1
@@ -4859,6 +4859,7 @@ The following variables are available, where appropriate:
 .It Li "copy_cursor_word" Ta "" Ta "Word under cursor in copy mode"
 .It Li "copy_cursor_x" Ta "" Ta "Cursor X position in copy mode"
 .It Li "copy_cursor_y" Ta "" Ta "Cursor Y position in copy mode"
+.It Li "current_file" Ta "" Ta "Current configuration file"
 .It Li "cursor_character" Ta "" Ta "Character at cursor in pane"
 .It Li "cursor_flag" Ta "" Ta "Pane cursor flag"
 .It Li "cursor_x" Ta "" Ta "Cursor X position in pane"
-- 
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