From 9dceeabe43a5997a2b84438fed499a3a8f5c6995 Mon Sep 17 00:00:00 2001
From: Neil <nyamatongwe@gmail.com>
Date: Sat, 5 Jan 2019 08:52:28 +1100
Subject: Backport: Recognize negative line numbers in GCC-format messages.
 Cppcheck shows some whole-file errors as line -1.

Backport of changeset 7191:c9ef21df2e3c.
---
 doc/ScintillaHistory.html | 5 +++++
 lexers/LexErrorList.cxx   | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/doc/ScintillaHistory.html b/doc/ScintillaHistory.html
index 540a4e4d1..118693c57 100644
--- a/doc/ScintillaHistory.html
+++ b/doc/ScintillaHistory.html
@@ -548,6 +548,11 @@
 	<li>
 	Released 31 October 2018.
 	</li>
+	<li>
+	Errorlist lexer recognizes negative line numbers as some programs show whole-file
+	errors occurring on line -1.
+	SciTE's parsing of diagnostics also updated to handle this case.
+	</li>
  	<li>
 	Added "nim" lexer (SCLEX_NIM) for the Nim language which was previously called Nimrod.
 	For compatibility, the old "nimrod" lexer is still present but is deprecated and will be removed at the
diff --git a/lexers/LexErrorList.cxx b/lexers/LexErrorList.cxx
index b3dcd2a59..4ca772814 100644
--- a/lexers/LexErrorList.cxx
+++ b/lexers/LexErrorList.cxx
@@ -175,7 +175,7 @@ static int RecogniseErrorListLine(const char *lineBuffer, Sci_PositionU lengthLi
 					canBeCtags = false;
 				}
 			} else if (state == stGccStart) {	// <filename>:
-				state = Is0To9(ch) ? stGccDigit : stUnrecognized;
+				state = ((ch == '-') || Is0To9(ch)) ? stGccDigit : stUnrecognized;
 			} else if (state == stGccDigit) {	// <filename>:<line>
 				if (ch == ':') {
 					state = stGccColumn;	// :9.*: is GCC
-- 
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