Refactor pcre2posix.c so as not to #include pcre2_internal.h.

git-svn-id: svn://vcs.exim.org/pcre2/code/trunk@513 6239d852-aaf2-0410-a92c-79f79f948069

1 files changed, 9 insertions, 2 deletions

diff --git a/src/pcre2_internal.h b/src/pcre2_internal.h
index 5f49129..1752c7a 100644
--- a/src/pcre2_internal.h
+++ b/src/pcre2_internal.h
@@ -242,8 +242,15 @@ Unicode doesn't go beyond 0x0010ffff. */
 
 #define MAX_UTF_CODE_POINT 0x10ffff
 
-/* Compile-time errors are added to this value. As they are documented, it
-should probably never be changed. */
+/* Compile-time positive error numbers (all except UTF errors, which are
+negative) start at this value. It should probably never be changed, in case
+some application is checking for specific numbers. There is a copy of this
+#define in pcre2posix.c (which now no longer includes this file). Ideally, a
+way of having a single definition should be found, but as the number is
+unlikely to change, this is not a pressing issue. The original reason for
+having a base other than 0 was to keep the absolute values of compile-time and
+run-time error numbers numerically different, but in the event the code does
+not rely on this. */
 
 #define COMPILE_ERROR_BASE 100