From 86f3a953d667d83f1f5777a59eef37d18b623699 Mon Sep 17 00:00:00 2001
From: Don Ho <don.h@free.fr>
Date: Sat, 27 Feb 2016 14:49:08 +0100
Subject: [PATCH] Fix crash bug in debug mode due to mismatch() function.
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1. Use find méthod to detect the prefix instead of mismatch() fuction to
fix the crash bug.
2. Add "<?" for php detection (not only "<?php").
---
 PowerEditor/src/ScitillaComponent/Buffer.cpp | 24 +++++++++++---------
 1 file changed, 13 insertions(+), 11 deletions(-)
diff --git a/PowerEditor/src/ScitillaComponent/Buffer.cpp b/PowerEditor/src/ScitillaComponent/Buffer.cpp
index 3ca31e1bb..0f3a8758b 100644
--- a/PowerEditor/src/ScitillaComponent/Buffer.cpp
+++ b/PowerEditor/src/ScitillaComponent/Buffer.cpp
@@ -1280,12 +1280,13 @@ LangType FileManager::detectLanguageFromTextBegining(const unsigned char *data,
 	// First test for a Unix-like Shebang
 	// See https://en.wikipedia.org/wiki/Shebang_%28Unix%29 for more details about Shebang
 	std::string shebang = "#!";
-	auto res = std::mismatch(shebang.begin(), shebang.end(), buf2Test.begin());
-	if (res.first == shebang.end())
+
+	size_t foundPos = buf2Test.find(shebang);
+	if (foundPos == 0)
 	{
 		// Make a list of the most commonly used languages
-		const size_t SHEBANG_LANGUAGES = 6;
-		FirstLineLanguages ShebangLangs[SHEBANG_LANGUAGES] = {
+		const size_t NB_SHEBANG_LANGUAGES = 6;
+		FirstLineLanguages ShebangLangs[NB_SHEBANG_LANGUAGES] = {
 			{ "sh",		L_BASH },
 			{ "python", L_PYTHON },
 			{ "perl",	L_PERL },
@@ -1295,7 +1296,7 @@ LangType FileManager::detectLanguageFromTextBegining(const unsigned char *data,
 		};
 
 		// Go through the list of languages
-		for (i = 0; i < SHEBANG_LANGUAGES; ++i)
+		for (i = 0; i < NB_SHEBANG_LANGUAGES; ++i)
 		{
 			if (buf2Test.find(ShebangLangs[i].pattern) != std::string::npos)
 			{
@@ -1308,18 +1309,19 @@ LangType FileManager::detectLanguageFromTextBegining(const unsigned char *data,
 	}
 
 	// Are there any other patterns we know off?
-	const size_t FIRST_LINE_LANGUAGES = 4;
-	FirstLineLanguages languages[FIRST_LINE_LANGUAGES] = {
+	const size_t NB_FIRST_LINE_LANGUAGES = 5;
+	FirstLineLanguages languages[NB_FIRST_LINE_LANGUAGES] = {
 		{ "<?xml",			L_XML },
 		{ "<?php",			L_PHP },
 		{ "<html",			L_HTML },
-		{ "<!DOCTYPE html",	L_HTML }
+		{ "<!DOCTYPE html",	L_HTML },
+		{ "<?",				L_PHP } // MUST be after "<?php" and "<?xml" to get the result as accurate as possible
 	};
 
-	for (i = 0; i < FIRST_LINE_LANGUAGES; ++i)
+	for (i = 0; i < NB_FIRST_LINE_LANGUAGES; ++i)
 	{
-		res = std::mismatch(languages[i].pattern.begin(), languages[i].pattern.end(), buf2Test.begin());
-		if (res.first == languages[i].pattern.end())
+		foundPos = buf2Test.find(languages[i].pattern);
+		if (foundPos == 0)
 		{
 			return languages[i].lang;
 		}
