From 51d40f28fcffc683919f8ff6e376d4820eef2cbf Mon Sep 17 00:00:00 2001
From: mitchell <70453897+667e-11@users.noreply.github.com>
Date: Wed, 13 Nov 2019 20:54:52 -0500
Subject: Make new arguments to `events.TAB_CLICKED` backwards-compatible.

---
 core/events.lua | 2 +-
 core/ui.lua     | 2 +-
 src/textadept.c | 4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/core/events.lua b/core/events.lua
index 768f41e0..d83c7803 100644
--- a/core/events.lua
+++ b/core/events.lua
@@ -246,10 +246,10 @@ local M = {}
 --   Note that Textadept always displays a context menu on right-click.
 --   Arguments:
 --
+--   * _`index`_: The numeric index of the clicked tab.
 --   * _`button`_: The mouse button number that was clicked, either `1` (left
 --     button), `2` (middle button), `3` (right button), `4` (wheel up), or `5`
 --    (wheel down).
---   * _`index`_: The numeric index of the clicked tab.
 --   * _`shift`_: The "Shift" modifier key is held down.
 --   * _`ctrl`_: The "Control" modifier key is held down.
 --   * _`alt`_: The "Alt"/"Option" modifier key is held down.
diff --git a/core/ui.lua b/core/ui.lua
index b0cce5d7..aa3e29e0 100644
--- a/core/ui.lua
+++ b/core/ui.lua
@@ -278,7 +278,7 @@ events_connect(events.VIEW_NEW, function() events.emit(events.UPDATE_UI) end)
 
 -- Switches between buffers when a tab is clicked.
 events_connect(events.TAB_CLICKED,
-               function(button, index) view:goto_buffer(_BUFFERS[index]) end)
+               function(index, button) view:goto_buffer(_BUFFERS[index]) end)
 
 -- Sets the title of the Textadept window to the buffer's filename.
 local function set_title()
diff --git a/src/textadept.c b/src/textadept.c
index 7f41693a..e8a87678 100644
--- a/src/textadept.c
+++ b/src/textadept.c
@@ -1227,7 +1227,7 @@ static int t_tabbuttonpress(GtkWidget *label, GdkEventButton *event, void*__) {
   for (int i = 0; i < gtk_notebook_get_n_pages(tabs); i++) {
     GtkWidget *page = gtk_notebook_get_nth_page(tabs, i);
     if (label != gtk_notebook_get_tab_label(tabs, page)) continue;
-    lL_event(lua, "tab_clicked", LUA_TNUMBER, event->button, LUA_TNUMBER, i + 1,
+    lL_event(lua, "tab_clicked", LUA_TNUMBER, i + 1, LUA_TNUMBER, event->button,
              event_mod(SHIFT), event_mod(CONTROL), event_mod(MOD1),
              event_mod(META), -1);
     if (event->button == 3) lL_showcontextmenu(lua, event, "tab_context_menu");
@@ -1855,7 +1855,7 @@ static void w_quit_osx(GtkosxApplication*_, void*__) {
  */
 static void t_tabchange(GtkNotebook*_, GtkWidget*__, int page_num, void*___) {
   if (tab_sync) return;
-  lL_event(lua, "tab_clicked", LUA_TNUMBER, 1, LUA_TNUMBER, page_num + 1, -1);
+  lL_event(lua, "tab_clicked", LUA_TNUMBER, page_num + 1, LUA_TNUMBER, 1, -1);
 }
 #endif // if GTK
 
-- 
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