Allow the user to specify the Help topic ID string for particular

sections. Useful if another program needs to jump to a particular
topic. (Really we should support the proper CTXOMAP / HELP_WM_HELP
system for doing this, but I don't like numeric IDs; you'd have to
parse a bunch of #defines in order to sensibly synchronise the IDs
between help file and code.)

[originally from svn r1457]

1 files changed, 9 insertions, 1 deletions

diff --git a/error.c b/error.c
index c81aa8c..d115073 100644
--- a/error.c
+++ b/error.c
@@ -16,7 +16,7 @@
 static void do_error(int code, va_list ap) {
     char error[1024];
     char auxbuf[256];
-    char *sp;
+    char *sp, *sp2;
     wchar_t *wsp;
     filepos fpos;
     int flags;
@@ -167,6 +167,14 @@ static void do_error(int code, va_list ap) {
 	sprintf(error, "expected higher heading levels before this one");
 	flags = FILEPOS;
 	break;
+      case err_winhelp_ctxclash:
+	fpos = *va_arg(ap, filepos *);
+	sp = va_arg(ap, char *);
+	sp2 = va_arg(ap, char *);
+	sprintf(error, "Windows Help context id `%.200s' clashes with "
+		"previously defined `%.200s'", sp, sp2);
+	flags = FILEPOS;
+	break;
       case err_whatever:
 	sp = va_arg(ap, char *);
         vsprintf(error, sp, ap);