Add binding for git_config_delete_multivar

pygit2/config.py

@@ -185,6 +185,17 @@ def set_multivar(self, name, regex, value):
                                         to_bytes(regex), to_bytes(value))
         check_error(err)
 
+    def delete_multivar(self, name, regex):
+        """Delete a multivar ''name''. ''regexp'' is a regular expression to
+        indicate which values to delete.
+        """
+        assert_string(name, "name")
+        assert_string(regex, "regex")
+
+        err = C.git_config_delete_multivar(self._config, to_bytes(name),
+                                           to_bytes(regex))
+        check_error(err)
+
     def get_bool(self, key):
         """Look up *key* and parse its value as a boolean as per the git-config
         rules. Return a boolean value (True or False).

pygit2/decl/config.h

@@ -44,6 +44,7 @@ int git_config_next(git_config_entry **entry, git_config_iterator *iter);
 void git_config_iterator_free(git_config_iterator *iter);
 int git_config_multivar_iterator_new(git_config_iterator **out, const git_config *cfg, const char *name, const char *regexp);
 int git_config_set_multivar(git_config *cfg, const char *name, const char *regexp, const char *value);
+int git_config_delete_multivar(git_config *cfg, const char *name, const char *regexp);
 int git_config_new(git_config **out);
 int git_config_snapshot(git_config **out, git_config *config);
 int git_config_open_ondisk(git_config **out, const char *path);

test/test_config.py

@@ -174,6 +174,14 @@ def test_write(config):
     for i in l:
         assert i == 'foo-123456'
 
+    config.delete_multivar('this.that', 'bar')
+    l = config.get_multivar('this.that', '')
+    assert 2 == len(list(l))
+
+    config.delete_multivar('this.that', r'foo-\d+')
+    l = config.get_multivar('this.that', '')
+    assert 0 == len(list(l))
+
 def test_iterator(config):
     lst = {}
     for entry in config: