# HG changeset patch
# User Franz Glasner <f.glasner@feldmann-mg.com>
# Date 1639738376 -3600
# Node ID 490f0c4665bb068b2bd1e21c3068d476f9673cd3
# Parent  ff8a9a7c6a93b17130d40f52dacdaf3dcff09fba
Optimize .unquote(): instead of doing string comparisone do this with characters

diff -r ff8a9a7c6a93 -r 490f0c4665bb configmix/config.py
--- a/configmix/config.py	Fri Dec 17 11:46:36 2021 +0100
+++ b/configmix/config.py	Fri Dec 17 11:52:56 2021 +0100
@@ -743,17 +743,21 @@
         res = [parts[0]]
         res_append = res.append
         for p in parts[1:]:
-            if p.startswith(klass._QUOTE_x):
+            try:
+                qc = p[0]
+            except IndexError:
+                raise ValueError("unknown quote syntax string: {}".format(s))
+            if qc == klass._QUOTE_x:
                 if len(p) < 3:
                     raise ValueError("quote syntax: length too small")
                 res_append(uchr(int(p[1:3], 16)))
                 res_append(p[3:])
-            elif p.startswith(klass._QUOTE_u):
+            elif qc == klass._QUOTE_u:
                 if len(p) < 5:
                     raise ValueError("quote syntax: length too small")
                 res_append(uchr(int(p[1:5], 16)))
                 res_append(p[5:])
-            elif p.startswith(klass._QUOTE_U):
+            elif qc == klass._QUOTE_U:
                 if len(p) < 9:
                     raise ValueError("quote syntax: length too small")
                 res_append(uchr(int(p[1:9], 16)))