From 94c180179c49ed678536915d7af46f54eb5988bb Mon Sep 17 00:00:00 2001
From: Cristian Dinu <cristian.virgil.dinu@gmail.com>
Date: Tue, 23 Mar 2021 08:35:05 +0200
Subject: [PATCH] When TAB is detected add 4 Space chars

---
 egui/src/widgets/text_edit.rs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/egui/src/widgets/text_edit.rs b/egui/src/widgets/text_edit.rs
index 64d0fba52..4f949b050 100644
--- a/egui/src/widgets/text_edit.rs
+++ b/egui/src/widgets/text_edit.rs
@@ -299,6 +299,9 @@ impl<'t> TextEdit<'t> {
             desired_height_rows,
         } = self;
 
+        // Tabs are represented as 4 spaces for now
+        *text = text.replace("\t", "    ");
+
         let text_style = text_style.unwrap_or_else(|| ui.style().body_text_style);
         let font = &ui.fonts()[text_style];
         let line_spacing = font.row_height();
@@ -436,6 +439,7 @@ impl<'t> TextEdit<'t> {
                             && text_to_insert != "\r"
                         {
                             let mut ccursor = delete_selected(text, &cursorp);
+
                             insert_text(&mut ccursor, text, text_to_insert);
                             Some(CCursorPair::one(ccursor))
                         } else {
@@ -450,7 +454,10 @@ impl<'t> TextEdit<'t> {
                         if multiline {
                             let mut ccursor = delete_selected(text, &cursorp);
                             insert_text(&mut ccursor, text, "\t");
-                            Some(CCursorPair::one(ccursor))
+
+                            // Because we add a tab and the tab is represented
+                            // as 4 spaces we must advance the cursor
+                            Some(CCursorPair::one(ccursor + 3))
                         } else {
                             None
                         }