From 5ff8245cc84a15d6a48bd2e19e4c70d4f8ae3f77 Mon Sep 17 00:00:00 2001
From: Maxime Coste <mawww@kakoune.org>
Date: Fri, 2 Dec 2016 13:59:34 +0000
Subject: [PATCH] =?UTF-8?q?Display=20non=20breaking=20spaces=20with=20?=
 =?UTF-8?q?=E2=8D=BD=20in=20show=5Fwhitespaces=20hihglighter?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Fixes #167
---
 src/highlighters.cc | 23 +++++++++++++----------
 1 file changed, 13 insertions(+), 10 deletions(-)

diff --git a/src/highlighters.cc b/src/highlighters.cc
index 3cf93b02..ece03ca5 100644
--- a/src/highlighters.cc
+++ b/src/highlighters.cc
@@ -695,26 +695,29 @@ void show_whitespaces(const Context& context, HighlightFlags flags, DisplayBuffe
 
             auto begin = buffer.iterator_at(atom_it->begin());
             auto end = buffer.iterator_at(atom_it->end());
-            for (BufferIterator it = begin; it != end; ++it)
+            for (BufferIterator it = begin; it != end; )
             {
-                auto c = *it;
-                if (c == '\t' or c == ' ' or c == '\n')
+                auto coord = it.coord();
+                Codepoint cp = utf8::read_codepoint<utf8::InvalidPolicy::Pass>(it, end);
+                if (cp == '\t' or cp == ' ' or cp == '\n' or cp == 0xA0)
                 {
-                    if (it != begin)
-                        atom_it = ++line.split(atom_it, it.coord());
-                    if (it+1 != end)
-                        atom_it = line.split(atom_it, (it+1).coord());
+                    if (coord != begin.coord())
+                        atom_it = ++line.split(atom_it, coord);
+                    if (it != end)
+                        atom_it = line.split(atom_it, it.coord());
 
-                    if (c == '\t')
+                    if (cp == '\t')
                     {
                         int column = (int)get_column(buffer, tabstop, it.coord());
                         int count = tabstop - (column % tabstop);
                         atom_it->replace("→" + String(' ', CharCount{count-1}));
                     }
-                    else if (c == ' ')
+                    else if (cp == ' ')
                         atom_it->replace("·");
-                    else if (c == '\n')
+                    else if (cp == '\n')
                         atom_it->replace("¬");
+                    else if (cp == 0xA0)
+                        atom_it->replace("⍽");
                     atom_it->face = whitespaceface;
                     break;
                 }