# HG changeset patch
# User Franz Glasner <fzglas.hg@dom66.de>
# Date 1599722550 -7200
# Node ID 1484f6c0223a6224e873a6964efff7615abfed87
# Parent  d715c10f29307b5490ee1177ebbdc23d222b8d3b
Implemented "del_assoc()"

diff -r d715c10f2930 -r 1484f6c0223a CHANGES.txt
--- a/CHANGES.txt	Thu Sep 10 02:01:28 2020 +0200
+++ b/CHANGES.txt	Thu Sep 10 09:22:30 2020 +0200
@@ -25,6 +25,12 @@
       Unknown filetypes within these directories are ignored
       automatically.
 
+   .. change::
+      :tags: feature
+
+      Implemented a function to delete an association:
+      :py:func:`configmix.del_assoc`.
+
 .. changelog::
    :version: 0.9
    :released: 2020-07-28
diff -r d715c10f2930 -r 1484f6c0223a configmix/__init__.py
--- a/configmix/__init__.py	Thu Sep 10 02:01:28 2020 +0200
+++ b/configmix/__init__.py	Thu Sep 10 09:22:30 2020 +0200
@@ -205,7 +205,7 @@
     "javascript": _load_json,
     "json": _load_json,
     "-*-ignore-*-": _load_ignore,
-    "-*- ignore -*-": _load_ignore,    
+    "-*- ignore -*-": _load_ignore,
 }
 """Default associations between file modes and loader functions"""
 
@@ -327,6 +327,23 @@
             _extensions.insert(0, (fnpattern, mode))
 
 
+def del_assoc(fnpattern):
+    """Remove all associations for `fnpattern`.
+
+    :param str fnpattern: the :mod:`fnmatch` pattern to associate a loader
+                          with
+
+    """
+    while True:
+        for i in range(len(_extensions)):
+            pat, fmode = _extensions[i]
+            if fnpattern == pat:
+                del _extensions[i]
+                break   # restart
+        else:
+            return      # nothing deleted -> done
+
+
 def _load_cfg_from_file(filename, ignore_unknown=False):
     """Determine the loader for file `filename` and return the loaded
     configuration dict.