patch 9.0.0214: splitting a line may duplicate virtual text
Problem: Splitting a line may duplicate virtual text. (Ben Jackson)
Solution: Don't duplicate a text property with virtual text. Make
auto-indenting work better. (closes #10919)
diff --git a/src/vim.h b/src/vim.h
index 6db4818..9445fa2 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -2778,6 +2778,7 @@
// Flags for adjust_prop_columns()
#define APC_SAVE_FOR_UNDO 1 // call u_savesub() before making changes
#define APC_SUBSTITUTE 2 // text is replaced, not inserted
+#define APC_INDENT 4 // changing indent
#define CLIP_ZINDEX 32000