Fix checkdoc errors

cider-client.el

@@ -976,22 +976,25 @@ CONTEXT represents a completion context for compliment."
       eldoc)))
 
 (defun cider-sync-request:spec-list (&optional filter-regex)
-  "Get a list of the available specs in the registry."
+  "Get a list of the available specs in the registry.
+
+Optional argument FILTER-REGEX filters specs.  By default, all specs are
+returned."
   (setq filter-regex (or filter-regex ""))
   (thread-first `("op" "spec-list"
                   "filter-regex" ,filter-regex)
     (cider-nrepl-send-sync-request)
     (nrepl-dict-get "spec-list")))
 
 (defun cider-sync-request:spec-form (spec)
-  "Get spec form from registry"
+  "Get SPEC's form from registry."
   (thread-first `("op" "spec-form"
                   "spec-name" ,spec)
     (cider-nrepl-send-sync-request)
     (nrepl-dict-get "spec-form")))
 
 (defun cider-sync-request:spec-example (spec)
-  "Get a spec example"
+  "Get an example for SPEC."
   (thread-first `("op" "spec-example"
                   "spec-name" ,spec)
     (cider-nrepl-send-sync-request)

cider-interaction.el

@@ -1068,8 +1068,8 @@ evaluation command.  Honor `cider-auto-jump-to-error'."
 (defun cider--prep-interactive-eval (form connection)
   "Prepare the environment for an interactive eval of FORM in CONNECTION.
 Ensure the current ns declaration has been evaluated (so that the ns
-containing FORM exists). Cache ns-form in the current buffer unless FORM is
-ns declaration itself. Clear any compilation highlights and kill the error
+containing FORM exists).  Cache ns-form in the current buffer unless FORM is
+ns declaration itself.  Clear any compilation highlights and kill the error
 window."
   (cider--clear-compilation-highlights)
   (cider--quit-error-window)
@@ -1366,23 +1366,22 @@ If invoked with a prefix ARG eval the expression after inserting it."
 
 (defun cider-enable-on-existing-clojure-buffers ()
   "Enable CIDER's minor mode on existing Clojure buffers.
-See `cider-mode'."
+See command `cider-mode'."
   (interactive)
   (add-hook 'clojure-mode-hook #'cider-mode)
   (dolist (buffer (cider-util--clojure-buffers))
     (with-current-buffer buffer
       (cider-mode +1))))
 
 (defun cider-disable-on-existing-clojure-buffers ()
-  "Disable `cider-mode' on existing Clojure buffers.
-See `cider-mode'."
+  "Disable command `cider-mode' on existing Clojure buffers."
   (interactive)
   (dolist (buffer (cider-util--clojure-buffers))
     (with-current-buffer buffer
       (cider-mode -1))))
 
 (defun cider-possibly-disable-on-existing-clojure-buffers ()
-  "If not connected, disable `cider-mode' on existing Clojure buffers."
+  "If not connected, disable command `cider-mode' on existing Clojure buffers."
   (unless (cider-connected-p)
     (cider-disable-on-existing-clojure-buffers)))
 

cider-mode.el

@@ -122,7 +122,7 @@ that of the namespace in the Clojure source buffer."
 
 (defun cider-switch-to-repl-buffer (&optional set-namespace)
   "Select the REPL buffer, when possible in an existing window.
-The buffer chosen is based on the file open in the current buffer. If
+The buffer chosen is based on the file open in the current buffer.  If
 multiple REPL buffers are associated with current connection the most
 recent is used.
 

cider-stacktrace.el

@@ -246,14 +246,19 @@ The error types are represented as strings."
 
 (defvar cider-stacktrace--all-negative-filters
   '(clj tooling dup java repl)
-  "Filters that remove stackframes")
+  "Filters that remove stackframes.")
 
 (defvar cider-stacktrace--all-positive-filters
   '(project)
-  "Filters that ensure stackframes are shown")
+  "Filters that ensure stackframes are shown.")
 
 (defun cider-stacktrace--face-for-filter (filter neg-filters pos-filters)
-  "Return whether we should mark the filter is active or not."
+  "Return whether we should mark the FILTER is active or not.
+
+NEG-FILTERS and POS-FILTERS are lists of filters to check FILTER's type.
+
+NEG-FILTERS dictate which frames should be hidden while POS-FILTERS can
+override this and ensure that those frames are shown."
   (cond ((member filter cider-stacktrace--all-negative-filters)
          (if (member filter neg-filters)
              'cider-stacktrace-filter-active-face
@@ -273,7 +278,7 @@ The error types are represented as strings."
 Find buttons with a 'filter property; if filter is a member of FILTERS, or
 if filter is nil ('show all') and the argument list is non-nil, fontify the
 button as disabled.  Upon finding text with a 'hidden-count property, stop
-searching and update the hidden count text. POS-FILTERS is the list of
+searching and update the hidden count text.  POS-FILTERS is the list of
 positive filters to always include."
   (with-current-buffer cider-error-buffer
     (save-excursion
@@ -606,7 +611,10 @@ prompt and whether to use a new window.  Similar to `cider-find-var'."
       (fill-region beg (point)))))
 
 (defun cider-stacktrace-render-filters (buffer special-filters filters)
-  "Emit into BUFFER toggle buttons for each of the FILTERS."
+  "Emit into BUFFER toggle buttons for each of the FILTERS.
+
+SPECIAL-FILTERS are filters that show stack certain stack frames, hiding
+others."
   (with-current-buffer buffer
     (insert "  Show: ")
     (dolist (filter special-filters)
@@ -627,7 +635,7 @@ prompt and whether to use a new window.  Similar to `cider-find-var'."
                           'help-echo (format "Toggle %s stack frames"
                                              (car filter)))
       (insert " "))
-    
+
     (let ((hidden "(0 frames hidden)"))
       (put-text-property 0 (length hidden) 'hidden-count t hidden)
       (insert " " hidden "\n"))))

cider-util.el

@@ -475,7 +475,10 @@ the buffer."
 
 ;; Taken from: https://github.com/emacs-mirror/emacs/blob/65c8c7cb96c14f9c6accd03cc8851b5a3459049e/lisp/help-mode.el#L551-L565
 (defun cider--make-back-forward-xrefs (&optional buffer)
-  "Insert special references `back' and `forward', as in `help-make-xrefs'"
+  "Insert special references `back' and `forward', as in `help-make-xrefs'.
+
+Optional argument BUFFER is the buffer in which to insert references.
+Default is current buffer."
   (with-current-buffer (or buffer (current-buffer))
     (insert "\n")
     (when (or help-xref-stack help-xref-forward-stack)