clarify that backslash escaped `*` or `_` may precede or follow a delimiter run of `*` or `_` respectively

1 files changed, 3 insertions, 2 deletions

diff --git a/spec.txt b/spec.txt
index 64a60b1..972ac8d 100644
--- a/spec.txt
+++ b/spec.txt
@@ -5856,8 +5856,9 @@ for efficient parsing strategies that do not backtrack.
 
 First, some definitions.  A [delimiter run](@) is either
 a sequence of one or more `*` characters that is not preceded or
-followed by a `*` character, or a sequence of one or more `_`
-characters that is not preceded or followed by a `_` character.
+followed by a non-backslash-escaped `*` character, or a sequence
+of one or more `_` characters that is not preceded or followed by
+a non-backslash-escaped `_` character.
 
 A [left-flanking delimiter run](@) is
 a [delimiter run] that is (a) not followed by [Unicode whitespace],