Remove unescape_string.

edb/common/string.py

@@ -35,23 +35,3 @@ def escape_string(s: str) -> str:
     result = result.replace('\t', '\\t')
 
     return result
-
-
-def unescape_string(s: str) -> str:
-    split = s.split('\\\\')
-
-    def unescape_non_backslash(s: str) -> str:
-        result = s
-
-        result = result.replace('\\\'', '\'')
-        result = result.replace('\\\"', '\"')
-        result = result.replace('\\b', '\b')
-        result = result.replace('\\f', '\f')
-        result = result.replace('\\n', '\n')
-        result = result.replace('\\r', '\r')
-        result = result.replace('\\t', '\t')
-
-        return result
-
-    return '\\'.join(unescape_non_backslash(r)
-                   for r in split)

tests/common/test_string.py

@@ -46,7 +46,3 @@ class StringTests(unittest.TestCase):
     def test_escape_string(self):
         for unescaped, escaped in StringTests.unescaped_escaped_strings:
             self.assertEqual(string.escape_string(unescaped), escaped)
-
-    def test_unescape_string(self):
-        for unescaped, escaped in StringTests.unescaped_escaped_strings:
-            self.assertEqual(string.unescape_string(escaped), unescaped)

tests/test_edgeql_data_migration.py

@@ -28,7 +28,6 @@
 import edgedb
 
 from edb.common import assert_data_shape
-from edb.common.string import unescape_string
 
 from edb.testbase import server as tb
 from edb.testbase import serutils
@@ -141,7 +140,7 @@ async def fast_forward_describe_migration(
                         interpolations[var_name] = var_value
 
                 for stmt in mig['proposed']['statements']:
-                    curddl = unescape_string(stmt['text'])
+                    curddl = stmt['text']
 
                     if interpolations:
                         def _replace(match, interpolations=interpolations):