fixup 244a54a18b7db6af177c9d10f3224772f08d7484: abuse the Scintilla view's "identifier" to enable lexing in the container

* SCI_SETILEXER(NULL) is not a reliable way to do that since
  that's the default for all views.
* This was breaking the git.tes lexer for instance and was unnecessarily
  driving teco_lexer_style() on plain-text documents.
* Since we currently do not implement the ILexer5 C++ interface
  and teco_view_t is just a pointer alias, we are abusing the view's "identifier" instead.
  This is probably sufficient, as long as there is only one lexer "in the container".
  Otherwise, there should perhaps be a single C++ class that does nothing but
  wrapping a callback into an ILexer5 object with a C ABI.

1 files changed, 9 insertions, 2 deletions

diff --git a/src/view.c b/src/view.c
index f14c658..836ffdc 100644
--- a/src/view.c
+++ b/src/view.c
@@ -645,7 +645,14 @@ teco_view_process_notify(teco_view_t *ctx, SCNotification *notify)
 	g_printf("SCINTILLA NOTIFY: code=%d\n", notify->nmhdr.code);
 #endif
 
-	if (notify->nmhdr.code == SCN_STYLENEEDED)
-		/* Lexing in the container: only used for SciTECO */
+	/*
+	 * Lexing in the container: only used for SciTECO.
+	 *
+	 * The "identifier" is abused to enable/disable lexing.
+	 * It could be extended later on for several internal lexers.
+	 * The alternative would be an ILexer5 wrapper, written in C++.
+	 */
+	if (notify->nmhdr.code == SCN_STYLENEEDED &&
+	    teco_view_ssm(ctx, SCI_GETIDENTIFIER, 0, 0) != 0)
 		teco_lexer_style(ctx, notify->position);
 }