From 68a3581d932c4e39a39e1c970fc8243b2d569090 Mon Sep 17 00:00:00 2001
From: Aadhavan Srinivasan <aadhavan@twomorecents.org>
Date: Sun, 26 Jan 2025 22:19:16 -0500
Subject: [PATCH] Added note on PCRE backreferences

---
 noteOnPCREBackreferences.txt | 7 +++++++
 1 file changed, 7 insertions(+)
 create mode 100644 noteOnPCREBackreferences.txt

diff --git a/noteOnPCREBackreferences.txt b/noteOnPCREBackreferences.txt
new file mode 100644
index 0000000..88596bb
--- /dev/null
+++ b/noteOnPCREBackreferences.txt
@@ -0,0 +1,7 @@
+In PCRE, following a backreference by _any_ number seems to turn it into an octal value. Why is this?
+
+Eg.
+`(a)\1` <-- Backreference
+`(a)\17` <-- Octal '17'
+`(a)\19` <-- Octal 1, then literal 9
+`(a)\1a` <-- Backreference, then 'a'