From 87fc359f42b57db2a9ee3d3211b3e9f2fbfe09c2 Mon Sep 17 00:00:00 2001
From: Neil <nyamatongwe@gmail.com>
Date: Mon, 21 Apr 2014 11:55:31 +1000
Subject: View line state in margin with SC_FOLDFLAG_LINESTATE as an aid to
 debugging.

---
 doc/ScintillaDoc.html     | 10 +++++++++-
 doc/ScintillaHistory.html |  4 ++++
 include/Scintilla.h       |  1 +
 include/Scintilla.iface   |  1 +
 src/Editor.cxx            | 21 +++++++++++++--------
 5 files changed, 28 insertions(+), 9 deletions(-)

diff --git a/doc/ScintillaDoc.html b/doc/ScintillaDoc.html
index b8789801f..a97aa6858 100644
--- a/doc/ScintillaDoc.html
+++ b/doc/ScintillaDoc.html
@@ -82,7 +82,7 @@
 
     <h1>Scintilla Documentation</h1>
 
-    <p>Last edited 16 April 2014 NH</p>
+    <p>Last edited 21 April 2014 NH</p>
 
     <p>There is <a class="jump" href="Design.html">an overview of the internal design of
     Scintilla</a>.<br />
@@ -5421,6 +5421,14 @@ sptr_t CallScintilla(unsigned int iMessage, uptr_t wParam, sptr_t lParam){
           <td align="left">display hexadecimal fold levels in line margin to aid debugging of
           folding. The appearance of this feature may change in the future.</td>
         </tr>
+
+        <tr>
+          <td align="left">SC_FOLDFLAG_LINESTATE</td>
+          <td align="left">128</td>
+
+          <td align="left">display hexadecimal line state in line margin to aid debugging of lexing and folding.
+	  May not be used at the same time as <code>SC_FOLDFLAG_LEVELNUMBERS</code>.</td>
+        </tr>
       </tbody>
     </table>
 
diff --git a/doc/ScintillaHistory.html b/doc/ScintillaHistory.html
index 0f0434da9..dc78adfd4 100644
--- a/doc/ScintillaHistory.html
+++ b/doc/ScintillaHistory.html
@@ -470,6 +470,10 @@
 	SC_MOD_INSERTCHECK.
 	</li>
 	<li>
+	Line state may be displayed in the line number margin to aid in debugging lexing and folding with
+	SC_FOLDFLAG_LINESTATE (128).
+	</li>
+	<li>
 	C++ lexer can highlight task marker keywords in comments as SCE_C_TASKMARKER.
 	</li>
 	<li>
diff --git a/include/Scintilla.h b/include/Scintilla.h
index ea2c12bc1..f8744c1c0 100644
--- a/include/Scintilla.h
+++ b/include/Scintilla.h
@@ -462,6 +462,7 @@ typedef sptr_t (*SciFnDirect)(sptr_t ptr, unsigned int iMessage, uptr_t wParam,
 #define SC_FOLDFLAG_LINEAFTER_EXPANDED 0x0008
 #define SC_FOLDFLAG_LINEAFTER_CONTRACTED 0x0010
 #define SC_FOLDFLAG_LEVELNUMBERS 0x0040
+#define SC_FOLDFLAG_LINESTATE 0x0080
 #define SCI_SETFOLDFLAGS 2233
 #define SCI_ENSUREVISIBLEENFORCEPOLICY 2234
 #define SCI_SETTABINDENTS 2260
diff --git a/include/Scintilla.iface b/include/Scintilla.iface
index 78cec5731..276ba8dd7 100644
--- a/include/Scintilla.iface
+++ b/include/Scintilla.iface
@@ -1154,6 +1154,7 @@ val SC_FOLDFLAG_LINEBEFORE_CONTRACTED=0x0004
 val SC_FOLDFLAG_LINEAFTER_EXPANDED=0x0008
 val SC_FOLDFLAG_LINEAFTER_CONTRACTED=0x0010
 val SC_FOLDFLAG_LEVELNUMBERS=0x0040
+val SC_FOLDFLAG_LINESTATE=0x0080
 
 # Set some style options for folding.
 set void SetFoldFlags=2233(int flags,)
diff --git a/src/Editor.cxx b/src/Editor.cxx
index aaa440dce..d11de5e72 100644
--- a/src/Editor.cxx
+++ b/src/Editor.cxx
@@ -2048,14 +2048,19 @@ void Editor::PaintSelMargin(Surface *surfWindow, PRectangle &rc) {
 						char number[100] = "";
 						if (lineDoc >= 0)
 							sprintf(number, "%d", lineDoc + 1);
-						if (foldFlags & SC_FOLDFLAG_LEVELNUMBERS) {
-							int lev = pdoc->GetLevel(lineDoc);
-							sprintf(number, "%c%c %03X %03X",
-									(lev & SC_FOLDLEVELHEADERFLAG) ? 'H' : '_',
-									(lev & SC_FOLDLEVELWHITEFLAG) ? 'W' : '_',
-									lev & SC_FOLDLEVELNUMBERMASK,
-									lev >> 16
-								   );
+						if (foldFlags & (SC_FOLDFLAG_LEVELNUMBERS | SC_FOLDFLAG_LINESTATE)) {
+							if (foldFlags & SC_FOLDFLAG_LEVELNUMBERS) {
+								int lev = pdoc->GetLevel(lineDoc);
+								sprintf(number, "%c%c %03X %03X",
+										(lev & SC_FOLDLEVELHEADERFLAG) ? 'H' : '_',
+										(lev & SC_FOLDLEVELWHITEFLAG) ? 'W' : '_',
+										lev & SC_FOLDLEVELNUMBERMASK,
+										lev >> 16
+									);
+							} else {
+								int state = pdoc->GetLineState(lineDoc);
+								sprintf(number, "%0X", state);
+							}
 						}
 						PRectangle rcNumber = rcMarker;
 						// Right justify
-- 
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