Don't display control characters

Replace them with their respective unicode char from the control picture
block.

diff --git a/src/uisupport/uistyle.cpp b/src/uisupport/uistyle.cpp
index 80464d8..df23a62 100644 (file)
--- a/src/uisupport/uistyle.cpp
+++ b/src/uisupport/uistyle.cpp
@@ -561,15 +561,43 @@ UiStyle::StyledString UiStyle::styleString(const QString &s_, quint32 baseFormat
 
 QString UiStyle::mircToInternal(const QString &mirc_)
 {
-    QString mirc = mirc_;
-    mirc.replace('%', "%%");    // escape % just to be sure
-    mirc.replace('\t', "        ");    // tabs break layout, also this is italics in Konversation
-    mirc.replace('\x02', "%B");
-    mirc.replace('\x0f', "%O");
-    mirc.replace('\x12', "%R");
-    mirc.replace('\x16', "%R");
-    mirc.replace('\x1d', "%S");
-    mirc.replace('\x1f', "%U");
+    QString mirc;
+    mirc.reserve(mirc_.size());
+    foreach (const QChar &c, mirc_) {
+        if ((c < '\x20' || c == '\x7f') && c != '\x03') {
+            switch (c.unicode()) {
+                case '\x02':
+                    mirc += "%B";
+                    break;
+                case '\x0f':
+                    mirc += "%O";
+                    break;
+                case '\x12':
+                case '\x16':
+                    mirc += "%R";
+                    break;
+                case '\x1d':
+                    mirc += "%S";
+                    break;
+                case '\x1f':
+                    mirc += "%U";
+                    break;
+                case '\x7f':
+                    mirc += QChar(0x2421);
+                    break;
+                default:
+                    mirc += QChar(0x2400 + c.unicode());
+            }
+        } else {
+            if (c == '\t') {
+                mirc += "        ";
+                continue;
+            }
+            if (c == '%')
+                mirc += c;
+            mirc += c;
+        }
+    }
 
     // Now we bring the color codes (\x03) in a sane format that can be parsed more easily later.
     // %Dcfxx is foreground, %Dcbxx is background color, where xx is a 2 digit dec number denoting the color code.