From 4514eda311451aefd684c587300774501ef20afb Mon Sep 17 00:00:00 2001
From: Philip Sargent <philip.sargent@klebos.com>
Date: Fri, 18 Nov 2022 20:42:03 +0000
Subject: make compatible with python 3.11 as well as 3.10

---
 parsers/survex.py | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'parsers/survex.py')

diff --git a/parsers/survex.py b/parsers/survex.py
index 60c0330..3754035 100644
--- a/parsers/survex.py
+++ b/parsers/survex.py
@@ -118,6 +118,8 @@ class LoadingSurvex():
     other survex files.
     A 'scanswallet' is what we today call a "survey scans folder" or a "wallet".
     """
+    # python regex flags (?i) means case-insentitive, (?s) means . matches newline too
+    # see https://docs.python.org/3/library/re.html
     rx_begin   = re.compile(r'(?i)begin')
     rx_end     = re.compile(r'(?i)end$')
     rx_title   = re.compile(r'(?i)title$')
-- 
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