From 0dfc35582157a9e0ff3ba2bf782746ceb2568ded Mon Sep 17 00:00:00 2001
From: Roland Walker <walker@pobox.com>
Date: Mon, 27 Jul 2026 06:05:17 -0400
Subject: [PATCH] render tab literals as four spaces in the REPL

rather than the "^I" control sequence.  Learned from reading the pgcli
source.
---
 changelog.md             |  8 ++++++++
 mycli/main_modes/repl.py | 10 ++++++++--
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/changelog.md b/changelog.md
index dc859264..08e4440d 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,11 @@
+Upcoming (TBD)
+==============
+
+Features
+---------
+* Render tab literals as four spaces in the REPL.
+
+
 2.7.0 (2026/07/25)
 ==============
 
diff --git a/mycli/main_modes/repl.py b/mycli/main_modes/repl.py
index 3f7b5581..0fcee418 100644
--- a/mycli/main_modes/repl.py
+++ b/mycli/main_modes/repl.py
@@ -33,7 +33,11 @@
     to_plain_text,
 )
 from prompt_toolkit.key_binding import KeyBindings
-from prompt_toolkit.layout.processors import ConditionalProcessor, HighlightMatchingBracketProcessor
+from prompt_toolkit.layout.processors import (
+    ConditionalProcessor,
+    HighlightMatchingBracketProcessor,
+    TabsProcessor,
+)
 from prompt_toolkit.lexers import PygmentsLexer
 from prompt_toolkit.output import ColorDepth
 from prompt_toolkit.shortcuts import CompleteStyle, PromptSession
@@ -583,7 +587,9 @@ def _build_prompt_session(
                 ConditionalProcessor(
                     processor=HighlightMatchingBracketProcessor(chars='[](){}'),
                     filter=has_focus(DEFAULT_BUFFER) & ~is_done,
-                )
+                ),
+                # renders tab as four spaces rather than ^I control character
+                TabsProcessor(char1=' ', char2=' '),
             ],
             tempfile_suffix='.sql',
             completer=DynamicCompleter(lambda: mycli.completer),