From a65160a232856cea2d1734fbbcc942329191e2a6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mon=20ou=C3=AFe?= <mon.ouie@gmail.com>
Date: Fri, 31 Aug 2012 20:32:33 +0200
Subject: [PATCH] Made C-u remove only the beginning of the line by default, as
 it does in Readline

---
 lib/coolline/coolline.rb |  2 +-
 lib/coolline/editor.rb   |  6 +++++
 test/editor_test.rb      | 49 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 56 insertions(+), 1 deletion(-)

diff --git a/lib/coolline/coolline.rb b/lib/coolline/coolline.rb
index 214677d..903778c 100644
--- a/lib/coolline/coolline.rb
+++ b/lib/coolline/coolline.rb
@@ -34,7 +34,7 @@ class Coolline
      Handler.new(?\C-a, &:beginning_of_line),
      Handler.new(?\C-e, &:end_of_line),
      Handler.new(?\C-k, &:kill_line),
-     Handler.new(?\C-u, &:clear_line),
+     Handler.new(?\C-u, &:kill_beginning_of_line),
      Handler.new(?\C-f, &:forward_char),
      Handler.new(?\C-b, &:backward_char),
      Handler.new(?\C-d, &:kill_current_char_or_leave),
diff --git a/lib/coolline/editor.rb b/lib/coolline/editor.rb
index 377a585..58968b0 100644
--- a/lib/coolline/editor.rb
+++ b/lib/coolline/editor.rb
@@ -128,6 +128,12 @@ def kill_line
       line[pos..-1] = ""
     end
 
+    # Removes everything up to the current character
+    def kill_beginning_of_line
+      line[0...pos] = ""
+      self.pos = 0
+    end
+
     # Removes all the characters in the line
     def clear_line
       line.clear
diff --git a/test/editor_test.rb b/test/editor_test.rb
index 3eb426c..95e8abc 100644
--- a/test/editor_test.rb
+++ b/test/editor_test.rb
@@ -63,6 +63,13 @@
     asserts(:line).equals ""
   end
 
+  context "after killing the beginning of the line" do
+    hookup { topic.kill_beginning_of_line }
+
+    asserts(:pos).equals 0
+    asserts(:line).equals ""
+  end
+
   context "after transposing words" do
     hookup { topic.transpose_words }
 
@@ -142,6 +149,13 @@
     asserts(:line).equals ""
   end
 
+  context "after killing the beginning of the line" do
+    hookup { topic.kill_beginning_of_line }
+
+    asserts(:pos).equals 0
+    asserts(:line).equals "a lovely dragon"
+  end
+
   context "after transposing words" do
     hookup { topic.transpose_words }
 
@@ -216,6 +230,13 @@
     asserts(:line).equals "foo "
   end
 
+  context "after killing the beginning of the line" do
+    hookup { topic.kill_beginning_of_line }
+
+    asserts(:pos).equals 0
+    asserts(:line).equals " bar"
+  end
+
   context "after transposing words" do
     hookup { topic.transpose_words }
 
@@ -318,6 +339,13 @@
     asserts(:line).equals "foo bar"
   end
 
+  context "after killing the beginning of the line" do
+    hookup { topic.kill_beginning_of_line }
+
+    asserts(:pos).equals 0
+    asserts(:line).equals " baz"
+  end
+
   context "after transposing words" do
     hookup { topic.transpose_words }
 
@@ -425,6 +453,13 @@
     asserts(:line).equals "a lovely dragon"
   end
 
+  context "after killing the beginning of the line" do
+    hookup { topic.kill_beginning_of_line }
+
+    asserts(:pos).equals 0
+    asserts(:line).equals ""
+  end
+
   context "after transposing words" do
     hookup { topic.transpose_words }
 
@@ -537,6 +572,13 @@
     asserts(:line).equals "foo bar "
   end
 
+  context "after killing the beginning of the line" do
+    hookup { topic.kill_beginning_of_line }
+
+    asserts(:pos).equals 0
+    asserts(:line).equals "baz qux"
+  end
+
   context "after transposing words" do
     hookup { topic.transpose_words }
 
@@ -649,6 +691,13 @@
     asserts(:line).equals "foo bar b"
   end
 
+  context "after killing the beginning of the line" do
+    hookup { topic.kill_beginning_of_line }
+
+    asserts(:pos).equals 0
+    asserts(:line).equals "az qux"
+  end
+
   context "after transposing words" do
     hookup { topic.transpose_words }