Improve a few doc strings, comments

* lisp/cedet/cedet-global.el (cedet-gnu-global-expand-filename):
* lisp/cedet/ede/locate.el (ede-locate-base):
* lisp/cedet/semantic/symref.el (semantic-symref-calculate-rootdir):
* src/fns.c (Fdelq): Improve doc string.

* lisp/progmodes/elisp-mode.el (elisp--xref-find-definitions): Add FIXME.

3 files changed, 7 insertions, 8 deletions

diff --git a/lisp/cedet/cedet-global.el b/lisp/cedet/cedet-global.el
index 3ceed5d3b54..77ffef037f1 100644
--- a/lisp/cedet/cedet-global.el
+++ b/lisp/cedet/cedet-global.el
@@ -104,7 +104,8 @@ SCOPE is the scope of the search, such as 'project or 'subdirs."
 
 (defun cedet-gnu-global-expand-filename (filename)
   "Expand the FILENAME with GNU Global.
-Return a fully qualified filename."
+Return a list of absolute filenames or nil if none found.
+Signal an error if Gnu global not available."
   (interactive "sFile: ")
   (let ((ans (with-current-buffer (cedet-gnu-global-call (list "-Pa" filename))
                (goto-char (point-min))
diff --git a/lisp/cedet/ede/locate.el b/lisp/cedet/ede/locate.el
index a076c46513c..cee2f8ec419 100644
--- a/lisp/cedet/ede/locate.el
+++ b/lisp/cedet/ede/locate.el
@@ -100,9 +100,9 @@ based on `ede-locate-setup-options'."
 (defclass ede-locate-base ()
   ((root :initarg :root
          :documentation
-         "The root of these locat searches.")
+         "The root of these locate searches.")
    (file :documentation
-         "The last file search for with EDE locate.")
+         "The last file searched for with EDE locate.")
    (lastanswer :documentation
               "The last answer provided by the locator.")
    (hash :documentation
@@ -245,10 +245,8 @@ variable `cedet-global-command'.")
     newroot))
 
 (cl-defmethod ede-locate-file-in-project-impl ((loc ede-locate-global)
-                                            filesubstring)
-  "Locate with LOC occurrences of FILESUBSTRING under PROJECTROOT.
-Searches are done under the current root of the EDE project
-that created this EDE locate object."
+                                               filesubstring)
+  "Locate occurrences of FILESUBSTRING in LOC, using Gnu Global."
   (require 'cedet-global)
   (let ((default-directory (oref loc root)))
     (cedet-gnu-global-expand-filename filesubstring)))
diff --git a/lisp/cedet/semantic/symref.el b/lisp/cedet/semantic/symref.el
index 89e8b40632d..15070dc0558 100644
--- a/lisp/cedet/semantic/symref.el
+++ b/lisp/cedet/semantic/symref.el
@@ -101,7 +101,7 @@ If no tools are supported, then 'grep is assumed.")
 
 (defun semantic-symref-calculate-rootdir ()
   "Calculate the root directory for a symref search.
-Start with and EDE project, or use the default directory."
+Start with an EDE project, or use the default directory."
   (let* ((rootproj (when (and (featurep 'ede) ede-minor-mode)
                      (ede-toplevel)))
          (rootdirbase (if rootproj