Don't allow negative heading numbers.

Author: michaelrsweet

CHANGES.md

@@ -9,6 +9,7 @@ v1.9.21 (YYYY-MM-DD)
 - Fixed a bug in the new PDF link code (Issue #536)
 - Fixed a bug in the number-up code (Issue #539)
 - Fixed a regression in leading whitespace handling (Issue #540)
+- Fixed a bug in numbered heading support.
 
 
 v1.9.20 (2024-12-09)

htmldoc/toc.cxx

@@ -156,9 +156,18 @@ parse_tree(tree_t *t)		/* I - Document tree */
 	  }
 
           if ((var = htmlGetVariable(t, (uchar *)"VALUE")) != NULL)
-            heading_numbers[level] = atoi((char *)var);
+          {
+            int temp = atoi((char *)var);
+
+            if (temp > 0)
+              heading_numbers[level] = temp;
+            else
+              heading_numbers[level] ++;
+          }
           else
+          {
             heading_numbers[level] ++;
+          }
 
           if (level == 0)
             TocDocCount ++;

vcnet/htmldoc.vcxproj

@@ -1,7 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="packages\libcups2_native.2.4.11.1\build\native\libcups2_native.props" Condition="Exists('packages\libcups2_native.2.4.11.1\build\native\libcups2_native.props')" />
-  <Import Project="packages\libjpeg-turbo-v142.2.0.4.3\build\native\libjpeg-turbo-v142.props" Condition="Exists('packages\libjpeg-turbo-v142.2.0.4.3\build\native\libjpeg-turbo-v142.props')" />
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|x64">
       <Configuration>Debug</Configuration>
@@ -30,6 +28,11 @@
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
+    <Import Project="packages\libcups2_native.2.4.11.1\build\native\libcups2_native.props" Condition="Exists('packages\libcups2_native.2.4.11.1\build\native\libcups2_native.props')" />
+    <Import Project="packages\libjpeg-turbo-v142.2.0.4.3\build\native\libjpeg-turbo-v142.props" Condition="Exists('packages\libjpeg-turbo-v142.2.0.4.3\build\native\libjpeg-turbo-v142.props')" />
+    <Import Project="packages\libpng_native.1.6.30\build\native\libpng_native.targets" Condition="Exists('packages\libpng_native.1.6.30\build\native\libpng_native.targets')" />
+    <Import Project="packages\zlib_native.redist.1.2.11\build\native\zlib_native.redist.targets" Condition="Exists('packages\zlib_native.redist.1.2.11\build\native\zlib_native.redist.targets')" />
+    <Import Project="packages\zlib_native.1.2.11\build\native\zlib_native.targets" Condition="Exists('packages\zlib_native.1.2.11\build\native\zlib_native.targets')" />
   </ImportGroup>
   <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />

vcnet/packages.config

@@ -6,7 +6,7 @@
   <package id="libjpeg-turbo-v142" version="2.0.4.3" targetFramework="native" />
   <package id="libpng_native" version="1.6.30" targetFramework="native" />
   <package id="libpng_native.redist" version="1.6.30" targetFramework="native" />
-  <package id="libressl_native.redist" version="3.7.3.0" targetFramework="native" />
+  <package id="libressl_native.redist" version="4.0.0" targetFramework="native" />
   <package id="zlib_native" version="1.2.11" targetFramework="native" />
   <package id="zlib_native.redist" version="1.2.11" targetFramework="native" />
 </packages>