runtime(doc): mention how to disable folding in diff mode (#13242)
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index a24dd04..493fa87 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -2839,7 +2839,8 @@
When omitted a context of six lines is used.
When using zero the context is actually one,
since folds require a line in between, also
- for a deleted line.
+ for a deleted line. Set it to a very large
+ value (999999) to disable folding completely.
See |fold-diff|.
iblank Ignore changes where lines are all blank. Adds