From 87e4a2e8c91e928db017573db09d085e97938fd3 Mon Sep 17 00:00:00 2001
From: Mark Wooding <mdw@distorted.org.uk>
Date: Mon, 10 Apr 2023 10:00:48 +0100
Subject: [PATCH] dot/ipython-config.py: Set the indent level to two spaces
 like God intended.

There's an option for every other thing, but not for this.
---
 dot/ipython-config.py | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/dot/ipython-config.py b/dot/ipython-config.py
index 1a8c25b..f48e057 100644
--- a/dot/ipython-config.py
+++ b/dot/ipython-config.py
@@ -18,6 +18,7 @@ c.InteractiveShell.colors = 'Linux'
 c.TerminalIPythonApp.display_banner = False
 c.TerminalInteractiveShell.confirm_exit = False
 c.TerminalInteractiveShell.display_completions = 'readlinelike'
+c.TerminalInteractiveShell.extra_open_editor_shortcuts = True
 c.TerminalInteractiveShell.term_title = False
 
 ## Syntax colouring.
@@ -58,3 +59,47 @@ if PYG and PTK:
     PTK.token.Token.MatchingBracket.Other: 'bg:#006400'
   }
   c.TerminalInteractiveShell.highlighting_style_overrides.update(d)
+
+## Set the indent level.  `Look what you made me do.'
+import IPython.core.inputsplitter as _IPCIP
+def my_find_indent(self, line):
+    """Compute the new indentation level for a single line.
+
+    Parameters
+    ----------
+    line : str
+      A single new line of non-whitespace, non-comment Python input.
+
+    Returns
+    -------
+    indent_spaces : int
+      New value for the indent level (it may be equal to self.indent_spaces
+    if indentation doesn't change.
+
+    full_dedent : boolean
+      Whether the new line causes a full flush-left dedent.
+    """
+    indent_spaces = self.indent_spaces
+    full_dedent = self._full_dedent
+
+    inisp = _IPCIP.num_ini_spaces(line)
+    if inisp < indent_spaces:
+        indent_spaces = inisp
+        if indent_spaces <= 0:
+            #print 'Full dedent in text',self.source # dbg
+            full_dedent = True
+
+    if line.rstrip()[-1] == ':':
+        indent_spaces += 2
+    elif _IPCIP.dedent_re.match(line):
+        indent_spaces -= 2
+        if indent_spaces <= 0:
+            full_dedent = True
+
+    # Safety
+    if indent_spaces < 0:
+        indent_spaces = 0
+        #print 'safety' # dbg
+
+    return indent_spaces, full_dedent
+_IPCIP.InputSplitter._find_indent = my_find_indent
-- 
2.11.0