From 6515b3de9794e86c4ef8eb27ec161ee054a09df1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ren=C3=A9=20Schmelzer?= <program@posteo.de>
Date: Tue, 12 Mar 2019 22:03:54 +0100
Subject: [PATCH] add indentation for ref-groups

---
 plantuml-mode.el                           |  4 ++-
 test/plantuml-indentation-sequence-test.el | 30 ++++++++++++++++++++++
 2 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/plantuml-mode.el b/plantuml-mode.el
index d0d31c9..3335c18 100644
--- a/plantuml-mode.el
+++ b/plantuml-mode.el
@@ -358,6 +358,7 @@ Two variants for groups: keyword is either followed by whitespace and some text
 or it is followed by line end.")
     (defvar plantuml-indent-regexp-activate-start "^\s*activate\s+.+$")
     (defvar plantuml-indent-regexp-box-start "^\s*box\s+.+$")
+    (defvar plantuml-indent-regexp-ref-start "^\s*ref\s+over\s+\\w+\s*$")
     (defvar plantuml-indent-regexp-title-start "^\s*title$")
     (defvar plantuml-indent-regexp-header-start "^\s*\\(?:\\(?:center\\|left\\|right\\)\s+header\\|header\\)$")
     (defvar plantuml-indent-regexp-footer-start "^\s*\\(?:\\(?:center\\|left\\|right\\)\s+footer\\|footer\\)$")
@@ -368,12 +369,13 @@ or it is followed by line end.")
                                                plantuml-indent-regexp-group-start
                                                plantuml-indent-regexp-activate-start
                                                plantuml-indent-regexp-box-start
+                                               plantuml-indent-regexp-ref-start
                                                plantuml-indent-regexp-title-start
                                                plantuml-indent-regexp-header-start
                                                plantuml-indent-regexp-footer-start
                                                plantuml-indent-regexp-legend-start
                                                plantuml-indent-regexp-if-start))
-    (defvar plantuml-indent-regexp-end "^\s*\\(?:endif\\|else\s*.*\\|end\\|end\s+note\\|end\s+box\\|}\\|deactivate\s+.+\\|end\s+title\\|endheader\\|endfooter\\|endlegend\\)$")
+    (defvar plantuml-indent-regexp-end "^\s*\\(?:}\\|endif\\|else\s*.*\\|end\\|end\s+note\\|end\s+box\\|end\s+ref\\|deactivate\s+.+\\|end\s+title\\|endheader\\|endfooter\\|endlegend\\)$")
     (setq plantuml-font-lock-keywords
           `(
             (,plantuml-types-regexp . font-lock-type-face)
diff --git a/test/plantuml-indentation-sequence-test.el b/test/plantuml-indentation-sequence-test.el
index c669c02..839a97c 100644
--- a/test/plantuml-indentation-sequence-test.el
+++ b/test/plantuml-indentation-sequence-test.el
@@ -27,6 +27,36 @@ box \"Device with USB connector\"
 end box
 " ))
 
+(ert-deftest platuml-test-block-indentation/sequence/ref ()
+  "Test correct indentation of a ref block"
+  (plantuml-test-indent-block
+   "
+participant Alice
+actor Bob
+
+ref over Alice, Bob : init
+
+Alice -> Bob : hello
+
+ref over Bob
+This can be on
+several lines
+end ref
+"
+   "
+participant Alice
+actor Bob
+
+ref over Alice, Bob : init
+
+Alice -> Bob : hello
+
+ref over Bob
+  This can be on
+  several lines
+end ref
+" ))
+
 
 (ert-deftest plantuml-test-block-indentation/sequence/alt-end ()
   "Test correct indentation of an alt-end block.