vis: implement gJ like behavior

The behavior is not exactly the same because vim preserves any
existing white spaces wihle we remove existing ones but do
not insert additional ones.

The vim behavior (essentially only deleating new lines) can be
achived using something like:

 :x/\n/d

Close #374

1 files changed, 15 insertions, 12 deletions

diff --git a/main.c b/main.c
index 26a9390..485478e 100644
--- a/main.c
+++ b/main.c
@@ -239,8 +239,8 @@ enum {
 	VIS_ACTION_INSERT_LINE_START,
 	VIS_ACTION_OPEN_LINE_ABOVE,
 	VIS_ACTION_OPEN_LINE_BELOW,
-	VIS_ACTION_JOIN_LINE_BELOW,
 	VIS_ACTION_JOIN_LINES,
+	VIS_ACTION_JOIN_LINES_TRIM,
 	VIS_ACTION_PROMPT_SHOW,
 	VIS_ACTION_REPEAT,
 	VIS_ACTION_SELECTION_FLIP,
@@ -857,15 +857,15 @@ static const KeyAction vis_action[] = {
 		"Begin a new line below the cursor",
 		openline, { .i = +1 }
 	},
-	[VIS_ACTION_JOIN_LINE_BELOW] = {
-		"join-line-below",
-		"Join line(s)",
-		join, { .i = VIS_MOVE_LINE_NEXT },
-	},
 	[VIS_ACTION_JOIN_LINES] = {
 		"join-lines",
 		"Join selected lines",
-		operator, { .i = VIS_OP_JOIN }
+		join, { .s = " " }
+	},
+	[VIS_ACTION_JOIN_LINES_TRIM] = {
+		"join-lines-trim",
+		"Join selected lines, remove white space",
+		join, { .s = "" }
 	},
 	[VIS_ACTION_PROMPT_SHOW] = {
 		"prompt-show",
@@ -1973,11 +1973,14 @@ static const char *openline(Vis *vis, const char *keys, const Arg *arg) {
 }
 
 static const char *join(Vis *vis, const char *keys, const Arg *arg) {
-	int count = vis_count_get_default(vis, 0);
-	if (count)
-		vis_count_set(vis, count-1);
-	vis_operator(vis, VIS_OP_JOIN);
-	vis_motion(vis, arg->i);
+	bool normal = (vis_mode_get(vis) == VIS_MODE_NORMAL);
+	vis_operator(vis, VIS_OP_JOIN, arg->s);
+	if (normal) {
+		int count = vis_count_get_default(vis, 0);
+		if (count)
+			vis_count_set(vis, count-1);
+		vis_motion(vis, VIS_MOVE_LINE_NEXT);
+	}
 	return keys;
 }