From 8de2c03301a5513704db15fae18790d409b67ac8 Mon Sep 17 00:00:00 2001
From: James Krieger <jamesmkrieger@gmail.com>
Date: Mon, 16 Oct 2023 14:07:40 +0100
Subject: [PATCH] parser fix

---
 prody/atomic/select.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/prody/atomic/select.py b/prody/atomic/select.py
index 7049a7672..445dc44dd 100644
--- a/prody/atomic/select.py
+++ b/prody/atomic/select.py
@@ -1341,6 +1341,7 @@ def _and2(self, sel, loc, tokens, subset=None):
         isDataLabel = atoms.isDataLabel
         append = None
         wasand = False
+        wasdata = False
         while tokens:
             # check whether token is an array to avoid array == str comparison
             token = tokens.pop(0)
@@ -1354,9 +1355,10 @@ def _and2(self, sel, loc, tokens, subset=None):
                             .format(repr('and ... and')), ['and', 'and'])
                     append = None
                     wasand = True
+                    wasdata = False
                     continue
 
-                elif isFlagLabel(token):
+                elif isFlagLabel(token) and not wasdata:
                     flags.append(token)
                     append = None
 
@@ -1396,6 +1398,7 @@ def _and2(self, sel, loc, tokens, subset=None):
                         evals.append([])
                         append = evals[-1].append
                     append(token)
+                    wasdata = True
 
                 elif token in UNARY:
                     unary.append([])