Backport commit 79a01866a from Emacs

* lisp/org-agenda.el (org-agenda-change-all-lines)
(org-agenda-today-p):
* lisp/org-id.el (org-id-get):
* lisp/org.el (org-highlight-latex-and-related)
(org--valid-property-p):
* lisp/ox-beamer.el (org-beamer--get-label):
* lisp/ox-latex.el (org-latex--caption-above-p):
* lisp/ox-odt.el (org-odt--copy-image-file)
(org-odt--copy-formula-file):
* lisp/ox.el (org-export-with-timestamps): Fix typos in docstrings.

lisp/*.el, src/*.c: Fix typos in docstrings
79a01866a01754b9f566af76ef96e80cd90d094b
Juanma Barranquero
Thu Sep 19 04:32:25 2019 +0200

lisp/org-agenda.el

@@ -8943,7 +8943,7 @@ The new content of the line will be NEWHEAD (as modified by
 If FIXFACE is non-nil, the face of each item is modified according to
 the new TODO state.
 If JUST-THIS is non-nil, change just the current line, not all.
-If FORCE-TAGS is non nil, the car of it returns the new tags."
+If FORCE-TAGS is non-nil, the car of it returns the new tags."
   (let* ((inhibit-read-only t)
 	 (line (org-current-line))
 	 (org-agenda-buffer (current-buffer))
@@ -10256,7 +10256,7 @@ to override `appt-message-warning-time'."
       (message "Added %d event%s for today" cnt (if (> cnt 1) "s" "")))))
 
 (defun org-agenda-today-p (date)
-  "Non nil when DATE means today.
+  "Non-nil when DATE means today.
 DATE is either a list of the form (month day year) or a number of
 days as returned by `calendar-absolute-from-gregorian' or
 `org-today'.  This function considers `org-extend-today-until'

lisp/org-id.el

@@ -242,7 +242,7 @@ Create an ID if necessary."
   "Get the ID property of the entry at point-or-marker POM.
 If POM is nil, refer to the entry at point.
 If the entry does not have an ID, the function returns nil.
-However, when CREATE is non nil, create an ID if none is present already.
+However, when CREATE is non-nil, create an ID if none is present already.
 PREFIX will be passed through to `org-id-new'.
 In any case, the ID of the entry is returned."
   (org-with-point-at pom

lisp/org.el

@@ -4281,7 +4281,7 @@ org-level-* faces."
 
 (defcustom org-highlight-latex-and-related nil
   "Non-nil means highlight LaTeX related syntax in the buffer.
-When non nil, the value should be a list containing any of the
+When non-nil, the value should be a list containing any of the
 following symbols:
   `latex'    Highlight LaTeX snippets and environments.
   `script'   Highlight subscript and superscript.
@@ -14934,7 +14934,7 @@ but in some other way.")
 Being in this list makes sure that they are offered for completion.")
 
 (defun org--valid-property-p (property)
-  "Non nil when string PROPERTY is a valid property name."
+  "Non-nil when string PROPERTY is a valid property name."
   (not
    (or (equal property "")
        (string-match-p "\\s-" property))))

lisp/ox-beamer.el

@@ -326,7 +326,7 @@ INFO is a plist used as a communication channel.
 
 The value is either the label specified in \"BEAMER_opt\"
 property, the custom ID, if there is one and
-`:latex-prefer-user-labels' property has a non nil value, or
+`:latex-prefer-user-labels' property has a non-nil value, or
 a unique internal label.  This function assumes HEADLINE will be
 treated as a frame."
   (cond

lisp/ox-latex.el

@@ -1236,7 +1236,7 @@ calling `org-latex-compile'."
 ;;; Internal Functions
 
 (defun org-latex--caption-above-p (element info)
-  "Non nil when caption is expected to be located above ELEMENT.
+  "Non-nil when caption is expected to be located above ELEMENT.
 INFO is a plist holding contextual information."
   (let ((above (plist-get info :latex-caption-above)))
     (if (symbolp above) above

lisp/ox-odt.el

@@ -2176,7 +2176,7 @@ SHORT-CAPTION are strings."
 ;;;; Links :: Inline Images
 
 (defun org-odt--copy-image-file (path)
-  "Returns the internal name of the file"
+  "Return the internal name of the file"
   (let* ((image-type (file-name-extension path))
 	 (media-type (format "image/%s" image-type))
 	 (target-dir "Images/")
@@ -2381,7 +2381,7 @@ used as a communication channel."
 	(concat equation "<text:tab/>" label))))))
 
 (defun org-odt--copy-formula-file (src-file)
-  "Returns the internal name of the file"
+  "Return the internal name of the file"
   (let* ((target-dir (format "Formula-%04d/"
 			     (cl-incf org-odt-embedded-formulas-count)))
 	 (target-file (concat target-dir "content.xml")))

lisp/ox.el

@@ -804,7 +804,7 @@ also be set with the OPTIONS keyword, e.g. \"timestamp:nil\"."
   :safe #'booleanp)
 
 (defcustom org-export-with-timestamps t
-  "Non nil means allow timestamps in export.
+  "Non-nil means allow timestamps in export.
 
 It can be set to any of the following values:
   t          export all timestamps.