From 3cc2390fed1cb4a626100e4bec428575a3e95f1a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc=20Andr=C3=A9=20Tanner?= <mat@brain-dump.org>
Date: Tue, 28 Jul 2015 08:01:36 +0200
Subject: vis: try to align cursors on the same column with CTRL-A

---
 config.def.h |  1 +
 vis.c        | 19 +++++++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/config.def.h b/config.def.h
index c88d54f..4402cd0 100644
--- a/config.def.h
+++ b/config.def.h
@@ -362,6 +362,7 @@ static KeyBinding vis_mode_normal[] = {
 	{ { NONE(ESC)               }, cursors_clear,  {                           } },
 	{ { CONTROL('K')            }, cursors_new,    { .i = -1                   } },
 	{ { CONTROL('J')            }, cursors_new,    { .i = +1                   } },
+	{ { CONTROL('A')            }, cursors_align,  {                           } },
 	{ { CONTROL('w'), NONE('n') }, cmd,            { .s = "open"               } },
 	{ { CONTROL('w'), NONE('c') }, cmd,            { .s = "q"                  } },
 	{ { CONTROL('w'), NONE('s') }, cmd,            { .s = "split"              } },
diff --git a/vis.c b/vis.c
index 9a98d65..0f4cc20 100644
--- a/vis.c
+++ b/vis.c
@@ -322,6 +322,8 @@ static void totill_reverse(const Arg *arg);
 static void replace(const Arg *arg);
 /* create a new cursor on the previous (arg->i < 0) or next (arg->i > 0) line */
 static void cursors_new(const Arg *arg);
+/* try to align all cursors on the same column */
+static void cursors_align(const Arg *arg);
 /* remove all but the primary cursor and their selections */
 static void cursors_clear(const Arg *arg);
 /* adjust action.count by arg->i */
@@ -842,6 +844,23 @@ static void cursors_new(const Arg *arg) {
 		view_cursors_to(cursor, pos);
 }
 
+static void cursors_align(const Arg *arg) {
+	View *view = vis->win->view;
+	Text *txt = vis->win->file->text;
+	int mincol = INT_MAX;
+	for (Cursor *c = view_cursors(view); c; c = view_cursors_next(c)) {
+		size_t pos = view_cursors_pos(c);
+		int col = text_line_char_get(txt, pos);
+		if (col < mincol)
+			mincol = col;
+	}
+	for (Cursor *c = view_cursors(view); c; c = view_cursors_next(c)) {
+		size_t pos = view_cursors_pos(c);
+		size_t col = text_line_char_set(txt, pos, mincol);
+		view_cursors_to(c, col);
+	}
+}
+
 static void cursors_clear(const Arg *arg) {
 	View *view = vis->win->view;
 	if (view_cursors_count(view) > 1)
-- 
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