Clarify linter configuration in --help

README.rst

@@ -332,10 +332,11 @@ The following `command line arguments`_ can also be used to modify the defaults:
 -i, --isort
        Also sort imports using the ``isort`` package
 -L CMD, --lint CMD
-       Also run a linter on changed files. ``CMD`` can be a name of path of the linter
-       binary, or a full quoted command line. Highlight linter output syntax if on a
-       terminal and the ``pygments`` package is available, or if enabled by
-       configuration.
+       Also run a linter on changed files. ``CMD`` can be a name or path of the linter
+       binary, or a full quoted command line with the command and options. Linters read
+       their configuration as normally, and aren't affected by -c / --config. Linter
+       output is syntax highlighted when the ``pygments`` package is available if run on
+       a terminal and or enabled by explicitly (see --color).
 -c PATH, --config PATH
        Ask ``black`` and ``isort`` to read configuration from ``PATH``. Note that other
        tools like flynt, Mypy, Pylint and Flake8 won't use this configuration file.

src/darker/help.py

@@ -56,10 +56,11 @@
 ISORT = "".join(ISORT_PARTS)
 
 LINT = (
-    "Also run a linter on changed files. `CMD` can be a name of path of the"
-    " linter binary, or a full quoted command line. Highlight linter output syntax if"
-    " on a terminal and the `pygments` package is available, or if enabled by"
-    " configuration."
+    "Also run a linter on changed files. `CMD` can be a name or path of the linter"
+    " binary, or a full quoted command line with the command and options. Linters read"
+    " their configuration as normally, and aren't affected by -c / --config. Linter"
+    " output is syntax highlighted when the `pygments` package is available if run on"
+    " a terminal and or enabled by explicitly (see --color)."
 )
 
 CONFIG = (