From 90b92aed3c85e21c7d825a721cb4391deb91a698 Mon Sep 17 00:00:00 2001
From: Maxime Coste <frrrwww@gmail.com>
Date: Fri, 12 Jul 2013 13:55:30 +0100
Subject: [PATCH] add support for tolower (`), toupper (~), and swap case
 become alt-`

---
 README.asciidoc |  4 +++-
 src/normal.cc   | 15 +++++++++++----
 2 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/README.asciidoc b/README.asciidoc
index f1e760f3..069336c8 100644
--- a/README.asciidoc
+++ b/README.asciidoc
@@ -128,7 +128,9 @@ Changes
  * _r_: replace each character with the next entered one
  * _&_: align selection, align the last character of selections by
         inserting spaces before
- * _~_: swap case
+ * _`_: to lower case
+ * _~_: to upper case
+ * _alt-`_: swap case
 
 Goto Commands
 -------------
diff --git a/src/normal.cc b/src/normal.cc
index 1b2120f5..11e95305 100644
--- a/src/normal.cc
+++ b/src/normal.cc
@@ -211,20 +211,24 @@ void replace_with_char(Context& context)
     });
 }
 
-Codepoint swapped_case(Codepoint cp)
+Codepoint to_lower(Codepoint cp) { return tolower(cp); }
+Codepoint to_upper(Codepoint cp) { return toupper(cp); }
+
+Codepoint swap_case(Codepoint cp)
 {
     Codepoint res = std::tolower(cp);
     return res == cp ? std::toupper(cp) : res;
 }
 
-void swap_case(Context& context)
+template<Codepoint (*func)(Codepoint)>
+void for_each_char(Context& context)
 {
     Editor& editor = context.editor();
     std::vector<String> sels = editor.selections_content();
     for (auto& sel : sels)
     {
         for (auto& c : sel)
-            c = swapped_case(c);
+            c = func(c);
     }
     editor.insert(sels, InsertMode::Replace);
 }
@@ -881,7 +885,10 @@ KeyMap keymap =
     { { Key::Modifiers::None, 'q' }, start_or_end_macro_recording },
     { { Key::Modifiers::None, 'Q' }, replay_macro },
 
-    { { Key::Modifiers::None, '~' }, swap_case },
+    { { Key::Modifiers::None, '`' }, for_each_char<to_lower> },
+    { { Key::Modifiers::None, '~' }, for_each_char<to_upper> },
+    { { Key::Modifiers::Alt, '`' },  for_each_char<swap_case> },
+
     { { Key::Modifiers::None, '&' }, align },
 
     { Key::Left,  move<CharCount, Backward> },