diff --git a/salt/modules/file.py b/salt/modules/file.py
index f39d618203..93eeaf312e 100644
--- a/salt/modules/file.py
+++ b/salt/modules/file.py
@@ -16,7 +16,6 @@ import hashlib
 import itertools
 import logging
 import mmap
-import operator
 import os
 import re
 import shutil
@@ -28,7 +27,6 @@ import time
 import urllib.parse
 from collections import namedtuple
 from collections.abc import Iterable, Mapping
-from functools import reduce
 
 import salt.utils.args
 import salt.utils.atomicfile
@@ -1622,38 +1620,38 @@ def comment_line(path, regex, char="#", cmnt=True, backup=".bak"):
 
 def _get_flags(flags):
     """
-    Return an integer appropriate for use as a flag for the re module from a
-    list of human-readable strings
+    Return the names of the Regex flags that correspond to flags
 
     .. code-block:: python
 
-        >>> _get_flags(['MULTILINE', 'IGNORECASE'])
-        10
+        >>> _get_flags(['IGNORECASE', 'MULTILINE'])
+        re.IGNORECASE|re.MULTILINE
         >>> _get_flags('MULTILINE')
-        8
-        >>> _get_flags(2)
-        2
+        re.MULTILINE
+        >>> _get_flags(8)
+        re.MULTILINE
+        >>> _get_flags(re.IGNORECASE)
+        re.IGNORECASE
     """
-    if isinstance(flags, str):
+    if isinstance(flags, re.RegexFlag):
+        return flags
+    elif isinstance(flags, int):
+        return re.RegexFlag(flags)
+    elif isinstance(flags, str):
         flags = [flags]
 
     if isinstance(flags, Iterable) and not isinstance(flags, Mapping):
-        _flags_acc = [0]  # An initial 0 avoids resucing on empty list, an error
+        _flags = re.RegexFlag(0)
         for flag in flags:
-            _flag = getattr(re, str(flag).upper())
-
-            if not isinstance(_flag, int):
-                raise SaltInvocationError("Invalid re flag given: {}".format(flag))
-
-            _flags_acc.append(_flag)
-
-        return reduce(operator.__or__, _flags_acc)
-    elif isinstance(flags, int):
-        return flags
+            _flag = getattr(re.RegexFlag, str(flag).upper(), None)
+            if not _flag:
+                raise CommandExecutionError(f"Invalid re flag given: {flag}")
+            _flags |= _flag
+        return _flags
     else:
-        raise SaltInvocationError(
-            'Invalid re flags: "{}", must be given either as a single flag '
-            "string, a list of strings, or as an integer".format(flags)
+        raise CommandExecutionError(
+            f'Invalid re flags: "{flags}", must be given either as a single flag '
+            "string, a list of strings, as an integer, or as an re flag"
         )
 
 
@@ -2513,8 +2511,8 @@ def replace(
             "Only one of append and prepend_if_not_found is permitted"
         )
 
-    flags_num = _get_flags(flags)
-    cpattern = re.compile(salt.utils.stringutils.to_bytes(pattern), flags_num)
+    re_flags = _get_flags(flags)
+    cpattern = re.compile(salt.utils.stringutils.to_bytes(pattern), re_flags)
     filesize = os.path.getsize(path)
     if bufsize == "file":
         bufsize = filesize
@@ -2582,7 +2580,7 @@ def replace(
                             "^{}($|(?=\r\n))".format(re.escape(content))
                         ),
                         r_data,
-                        flags=flags_num,
+                        flags=re_flags,
                     ):
                         # Content was found, so set found.
                         found = True
@@ -3132,7 +3130,11 @@ def search(path, pattern, flags=8, bufsize=1, ignore_if_missing=False, multiline
         salt '*' file.search /etc/crontab 'mymaintenance.sh'
     """
     if multiline:
-        flags = _add_flags(flags, "MULTILINE")
+        re_flags = _add_flags(flags, "MULTILINE")
+    else:
+        re_flags = _get_flags(flags)
+
+    if re.RegexFlag.MULTILINE in re_flags:
         bufsize = "file"
 
     # This function wraps file.replace on purpose in order to enforce
@@ -3142,7 +3144,7 @@ def search(path, pattern, flags=8, bufsize=1, ignore_if_missing=False, multiline
         path,
         pattern,
         "",
-        flags=flags,
+        flags=re_flags,
         bufsize=bufsize,
         dry_run=True,
         search_only=True,