From b80bad0a937794edeb9d3287d3c60a28fc03f443 Mon Sep 17 00:00:00 2001
From: "Bland, Paul" <Paul.Bland@mastercard.com>
Date: Fri, 17 Aug 2018 10:56:15 -0400
Subject: [PATCH 1/3] created option for right angle arrows

---
 src/diagrams/sequence/sequenceRenderer.js | 10 +++++++---
 src/mermaidAPI.js                         |  7 ++++++-
 2 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/src/diagrams/sequence/sequenceRenderer.js b/src/diagrams/sequence/sequenceRenderer.js
index fcf41d28ea..eab7d34bf1 100644
--- a/src/diagrams/sequence/sequenceRenderer.js
+++ b/src/diagrams/sequence/sequenceRenderer.js
@@ -218,9 +218,13 @@ const drawMessage = function (elem, startx, stopx, verticalPos, msg) {
 
   let line
   if (startx === stopx) {
-    line = g.append('path')
-      .attr('d', 'M ' + startx + ',' + verticalPos + ' C ' + (startx + 60) + ',' + (verticalPos - 10) + ' ' + (startx + 60) + ',' +
-      (verticalPos + 30) + ' ' + startx + ',' + (verticalPos + 20))
+    if (conf.rightAngles) {
+      line = g.append('path').attr('d', `M  ${startx},${verticalPos} H ${startx + 75} V ${verticalPos + 25} H ${startx}`)
+    } else {
+      line = g.append('path')
+        .attr('d', 'M ' + startx + ',' + verticalPos + ' C ' + (startx + 60) + ',' + (verticalPos - 10) + ' ' + (startx + 60) + ',' +
+        (verticalPos + 30) + ' ' + startx + ',' + (verticalPos + 20))
+    }
 
     bounds.bumpVerticalPos(30)
     const dx = Math.max(textWidth / 2, 100)
diff --git a/src/mermaidAPI.js b/src/mermaidAPI.js
index d40c336c42..6fcf4834df 100644
--- a/src/mermaidAPI.js
+++ b/src/mermaidAPI.js
@@ -153,7 +153,12 @@ const config = {
      * **useMaxWidth** - when this flag is set the height and width is set to 100% and is then scaling with the
      * available space if not the absolute space required is used
      */
-    useMaxWidth: true
+    useMaxWidth: true,
+
+    /**
+     * **rightAngles** - this will display arrows that start and begin at the same node as right angles, rather than a curve
+     */
+    rightAngles: false
   },
 
   /** ### gantt

From ae8dde981b81f2079534d0eafd8e8341cf3d6ad4 Mon Sep 17 00:00:00 2001
From: "Bland, Paul" <Paul.Bland@mastercard.com>
Date: Wed, 22 Aug 2018 15:30:12 -0400
Subject: [PATCH 2/3] make path a bit wider

---
 src/diagrams/sequence/sequenceRenderer.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/diagrams/sequence/sequenceRenderer.js b/src/diagrams/sequence/sequenceRenderer.js
index eab7d34bf1..ee1e2a48ac 100644
--- a/src/diagrams/sequence/sequenceRenderer.js
+++ b/src/diagrams/sequence/sequenceRenderer.js
@@ -219,7 +219,7 @@ const drawMessage = function (elem, startx, stopx, verticalPos, msg) {
   let line
   if (startx === stopx) {
     if (conf.rightAngles) {
-      line = g.append('path').attr('d', `M  ${startx},${verticalPos} H ${startx + 75} V ${verticalPos + 25} H ${startx}`)
+      line = g.append('path').attr('d', `M  ${startx},${verticalPos} H ${startx + (conf.width/2)} V ${verticalPos + 25} H ${startx}`)
     } else {
       line = g.append('path')
         .attr('d', 'M ' + startx + ',' + verticalPos + ' C ' + (startx + 60) + ',' + (verticalPos - 10) + ' ' + (startx + 60) + ',' +

From 42d66fd3d9d1eb6aa08d4ecf14c6790f957b29ab Mon Sep 17 00:00:00 2001
From: "Bland, Paul" <Paul.Bland@mastercard.com>
Date: Thu, 23 Aug 2018 11:53:04 -0400
Subject: [PATCH 3/3] tweak for lint

---
 src/diagrams/sequence/sequenceRenderer.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/diagrams/sequence/sequenceRenderer.js b/src/diagrams/sequence/sequenceRenderer.js
index ee1e2a48ac..ea7b9480b6 100644
--- a/src/diagrams/sequence/sequenceRenderer.js
+++ b/src/diagrams/sequence/sequenceRenderer.js
@@ -219,7 +219,7 @@ const drawMessage = function (elem, startx, stopx, verticalPos, msg) {
   let line
   if (startx === stopx) {
     if (conf.rightAngles) {
-      line = g.append('path').attr('d', `M  ${startx},${verticalPos} H ${startx + (conf.width/2)} V ${verticalPos + 25} H ${startx}`)
+      line = g.append('path').attr('d', `M  ${startx},${verticalPos} H ${startx + (conf.width / 2)} V ${verticalPos + 25} H ${startx}`)
     } else {
       line = g.append('path')
         .attr('d', 'M ' + startx + ',' + verticalPos + ' C ' + (startx + 60) + ',' + (verticalPos - 10) + ' ' + (startx + 60) + ',' +