Fix copyrights for GNU ELPAscratch/polymode

Assign the Copyright to the FSF.

Include various other minor and cosmetic changes:
- Prefer #' to quote function names.
- Fix a few uses of ' in docstrings which can be rendered incorrectly.
- Remove redundant `:group` args.
- Use keyword args for `define-minor-mode` rather than obsolete
  positional arguments.
- Use `lexical-binding`.
- Add a `Copyright` line where missing.

* polymode-classes.el (pm-chunkmode, pm-inner-chunkmode): Use `symbol`
rather than `face` as type, since `face` is not actually defined as a type.

* polymode-compat.el: Use `with-eval-after-load` throughout.

* polymode-core.el: Don't use #' to quote the symbol passed to `advice-add`
because this arg can't be just a function, it has to be a symbol.
(pm-use-cache): Move before first use.

* template/targets/utils.el (polymode-add-deps-to-load-path): Make better
use of `expand-file-name`.

* tests/compat-tests.el: Skip tests if `poly-markdown` is not available,
instead of signaling an error.

4 files changed, 16 insertions, 1 deletions

diff --git a/tests/compat-tests.el b/tests/compat-tests.el
index c8b97da..1607efb 100644
--- a/tests/compat-tests.el
+++ b/tests/compat-tests.el
@@ -1,4 +1,8 @@
-(require 'poly-markdown)
+;;; compat-tests.el -- Tests for Polymode  -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2022  Free Software Foundation, Inc.
+
+(require 'poly-markdown nil t)          ;Don't fail if not installed.
 
 (define-innermode poly-test-markdown-inline-python-innermode  poly-markdown-inline-code-innermode
   :head-matcher (cons "[^`]\\(`py \\)" 1)
@@ -12,6 +16,7 @@
                 poly-test-markdown-inline-python-innermode))
 
 (ert-deftest compat/lsp/lsp-text ()
+  (skip-unless (fboundp 'poly-markdown-mode))
   (let ((markdown-enable-math t))
     (pm-test-run-on-file poly-test-markdown-mode "test.md"
       ;; python
@@ -106,6 +111,7 @@
 
 
 (ert-deftest compat/indent/double-poly-mode-init-preserves-original-functions ()
+  (skip-unless (fboundp 'poly-markdown-mode))
   (pm-test-run-on-file poly-test-markdown-mode "test.md"
     (goto-char (point-min))
     (pm-switch-to-buffer)
diff --git a/tests/define-tests.el b/tests/define-tests.el
index 26f7278..976ab44 100644
--- a/tests/define-tests.el
+++ b/tests/define-tests.el
@@ -1,5 +1,7 @@
 ;;; mode-init-tests.el --- Various initialization tests -*- lexical-binding: t -*-
 
+;; Copyright (C) 2019-2022  Free Software Foundation, Inc.
+
 (require 'polymode)
 (require 'polymode-test-utils)
 
diff --git a/tests/poly-modes-tests.el b/tests/poly-modes-tests.el
index 0a093e1..43e4b6f 100644
--- a/tests/poly-modes-tests.el
+++ b/tests/poly-modes-tests.el
@@ -1,3 +1,6 @@
+;;; poly-modes-tests.el -- Tests for Polymode  -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2022  Free Software Foundation, Inc.
 
 ;; load all tests from individual poly-xyz repositories located in the parent of
 ;; this repository
diff --git a/tests/span-matcher-tests.el b/tests/span-matcher-tests.el
index bd36d06..6557f47 100644
--- a/tests/span-matcher-tests.el
+++ b/tests/span-matcher-tests.el
@@ -1,3 +1,7 @@
+;;; poly-modes-tests.el -- Tests for Polymode  -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2018-2022  Free Software Foundation, Inc.
+
 (require 'polymode-test-utils)
 
 (defvar markdown-inline-head-fun-matcher (pm-fun-matcher (cons "[^`]\\(`{?[[:alpha:]+-]+\\)[ \t]" 1)))