From 637b1adbdda1af761518b90b52fb6ae7798584bc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc=20Andr=C3=A9=20Tanner?= <mat@brain-dump.org>
Date: Mon, 22 Sep 2014 06:09:07 +0200
Subject: Add support for the '<', '>' marks

---
 README       |  8 ++++++--
 config.def.h |  4 ++++
 editor.c     | 10 ++++++++--
 editor.h     |  2 ++
 text.c       |  2 +-
 5 files changed, 21 insertions(+), 5 deletions(-)

diff --git a/README b/README
index 60c68a3..6926c1e 100644
--- a/README
+++ b/README
@@ -389,8 +389,12 @@ and their current support in vis.
  Marks
  -----
 
-  Only the 26 lower case marks [a-z] are supported. No marks across files
-  are supported. Marks are not preserved over editing sessions.
+  [a-z] general purpose marks
+  <     start of the last selected visual area in current buffer
+  >     end of the last selected visual area in current buffer
+
+  No marks across files are supported. Marks are not preserved over
+  editing sessions.
 
  Registers
  ---------
diff --git a/config.def.h b/config.def.h
index a774a1d..46ff32b 100644
--- a/config.def.h
+++ b/config.def.h
@@ -281,6 +281,8 @@ static KeyBinding vis_marks[] = {
 	{ { NONE('`'), NONE('x')    }, mark,          { .i = MARK_x          } },
 	{ { NONE('`'), NONE('y')    }, mark,          { .i = MARK_y          } },
 	{ { NONE('`'), NONE('z')    }, mark,          { .i = MARK_z          } },
+	{ { NONE('`'), NONE('<')    }, mark,     { .i = MARK_SELECTION_START } },
+	{ { NONE('`'), NONE('>')    }, mark,     { .i = MARK_SELECTION_END   } },
 	{ /* empty last element, array terminator */                           },
 };
 
@@ -311,6 +313,8 @@ static KeyBinding vis_marks_line[] = {
 	{ { NONE('\''), NONE('x')   }, mark_line,     { .i = MARK_x          } },
 	{ { NONE('\''), NONE('y')   }, mark_line,     { .i = MARK_y          } },
 	{ { NONE('\''), NONE('z')   }, mark_line,     { .i = MARK_z          } },
+	{ { NONE('\''), NONE('<')   }, mark_line, { .i = MARK_SELECTION_START } },
+	{ { NONE('\''), NONE('>')   }, mark_line, { .i = MARK_SELECTION_END   } },
 	{ /* empty last element, array terminator */                           },
 };
 
diff --git a/editor.c b/editor.c
index 367c40b..4128ffa 100644
--- a/editor.c
+++ b/editor.c
@@ -55,8 +55,14 @@ static void editor_window_statusbar_draw(EditorWin *win) {
 		win->editor->statusbar(win);
 }
 
-static void editor_window_cursor_moved(Win *win, void *data) {
-	editor_window_statusbar_draw(data);
+static void editor_window_cursor_moved(Win *winwin, void *data) {
+	EditorWin *win = data;
+	Filerange sel = window_selection_get(winwin);
+	if (text_range_valid(&sel) && sel.start != sel.end) {
+		text_mark_set(win->text, MARK_SELECTION_START, sel.start);
+		text_mark_set(win->text, MARK_SELECTION_END, sel.end);
+	}
+	editor_window_statusbar_draw(win);
 }
 
 void editor_statusbar_set(Editor *ed, void (*statusbar)(EditorWin*)) {
diff --git a/editor.h b/editor.h
index 5eeab8e..a607bda 100644
--- a/editor.h
+++ b/editor.h
@@ -86,6 +86,8 @@ enum Mark {
 	MARK_x,
 	MARK_y,
 	MARK_z,
+	MARK_SELECTION_START,
+	MARK_SELECTION_END,
 };
 
 struct Editor {
diff --git a/text.c b/text.c
index e613ccb..fdcf1cf 100644
--- a/text.c
+++ b/text.c
@@ -120,7 +120,7 @@ struct Text {
 	struct stat info;	/* stat as proped on load time */
 	int fd;                 /* the file descriptor of the original mmap-ed data */
 	LineCache lines;        /* mapping between absolute pos in bytes and logical line breaks */
-	const char *marks[26];  /* a mark is a pointer into an underlying buffer */
+	const char *marks[32];  /* a mark is a pointer into an underlying buffer */
 	int newlines;           /* 0: unknown, 1: \n, -1: \r\n */
 };
 
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