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lisp/*.el, src/*.c: Doc fixes related to returning t vs non-nil
* lisp/progmodes/flymake-proc.el (flymake-proc--find-buffer-for-file): Doc fix; return value is a buffer, not t. * lisp/progmodes/ebrowse.el (ebrowse-member-display-p): Doc fix; return value is the MEMBER argument, not nil. * lisp/files.el (hack-one-local-variable-eval-safep): * lisp/play/doctor.el (doctor-nounp, doctor-pronounp): * lisp/progmodes/flymake-proc.el (flymake-proc--check-include): * lisp/progmodes/js.el (js--broken-arrow-terminates-line-p): Doc fix; a non-nil return value is not always t. * lisp/image.el (image-type-available-p): * lisp/simple.el (region-active-p): * lisp/window.el (frame-root-window-p): * src/buffer.c (Fbuffer_live_p): * src/image.c (Finit_image_library): * src/window.c (Fwindow_minibuffer_p): Doc fix; a non-nil return value is always t. * doc/lispref/minibuf.texi (Minibuffer Windows): Doc fix.
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@ -2364,8 +2364,8 @@ minibuffer window according to the selected frame.
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@c Emacs 19 feature
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@defun window-minibuffer-p &optional window
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This function returns non-@code{nil} if @var{window} is a minibuffer
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window. @var{window} defaults to the selected window.
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This function returns @code{t} if @var{window} is a minibuffer window.
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@var{window} defaults to the selected window.
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@end defun
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The following function returns the window showing the currently active
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@ -3853,7 +3853,7 @@ It is dangerous if either of these conditions are met:
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(hack-one-local-variable-quotep exp)))
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(defun hack-one-local-variable-eval-safep (exp)
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"Return t if it is safe to eval EXP when it is found in a file."
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"Return non-nil if it is safe to eval EXP when it is found in a file."
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(or (not (consp exp))
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;; Detect certain `put' expressions.
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(and (eq (car exp) 'put)
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@ -408,7 +408,7 @@ Optional DATA-P non-nil means SOURCE is a string containing image data."
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;;;###autoload
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(defun image-type-available-p (type)
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"Return non-nil if image type TYPE is available.
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"Return t if image type TYPE is available.
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Image types are symbols like `xbm' or `jpeg'."
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(and (fboundp 'init-image-library)
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(init-image-library type)))
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@ -1023,7 +1023,7 @@ the subject noun, and return the portion of the sentence following it."
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nil))))
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(defun doctor-nounp (x)
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"Return t if the symbol argument is a noun."
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"Return non-nil if the symbol argument is a noun."
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(or (doctor-pronounp x)
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(not (or (doctor-verbp x)
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(equal x 'not)
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@ -1031,7 +1031,7 @@ the subject noun, and return the portion of the sentence following it."
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(doctor-modifierp x) )) ))
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(defun doctor-pronounp (x)
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"Return t if the symbol argument is a pronoun."
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"Return non-nil if the symbol argument is a pronoun."
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(memq x '(
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i me mine myself
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we us ours ourselves ourself
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@ -2641,7 +2641,8 @@ means the member buffer is standalone. CLASS is its class."
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(defun ebrowse-member-display-p (member)
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"Return t if MEMBER must be displayed under the current filter settings."
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"Check if MEMBER must be displayed under the current filter settings.
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If so, return MEMBER; otherwise return nil."
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(if (and (aref ebrowse--filters (ebrowse-ms-visibility member))
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(or (null ebrowse--const-display-flag)
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(ebrowse-const-p member))
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@ -444,7 +444,7 @@ instead of reading master file from disk."
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(defun flymake-proc--check-include (source-file-name inc-name include-dirs)
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"Check if SOURCE-FILE-NAME can be found in include path.
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Return t if it can be found via include path using INC-NAME."
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Return non-nil if it can be found via include path using INC-NAME."
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(if (file-name-absolute-p inc-name)
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(flymake-proc--same-files source-file-name inc-name)
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(while (and include-dirs
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@ -458,7 +458,7 @@ Return t if it can be found via include path using INC-NAME."
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(defun flymake-proc--find-buffer-for-file (file-name)
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"Check if there exists a buffer visiting FILE-NAME.
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Return t if so, nil if not."
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Return the buffer if it exists, nil if not."
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(let ((buffer-name (get-file-buffer file-name)))
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(if buffer-name
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(get-buffer buffer-name))))
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@ -2703,7 +2703,7 @@ Whitespace and comments around the arrow are ignored.")
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(defun js--broken-arrow-terminates-line-p ()
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"Helper function for `js--proper-indentation'.
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Return t if the last non-comment, non-whitespace token of the
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Return non-nil if the last non-comment, non-whitespace token of the
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current line is the \"=>\" token (of an arrow function)."
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(let ((from (point)))
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(end-of-line)
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@ -5685,7 +5685,7 @@ For some commands, it may be appropriate to ignore the value of
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t))
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(defun region-active-p ()
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"Return non-nil if Transient Mark mode is enabled and the mark is active.
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"Return t if Transient Mark mode is enabled and the mark is active.
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Some commands act specially on the region when Transient Mark
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mode is enabled. Usually, such commands should use
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@ -3867,7 +3867,7 @@ POSITION defaults to the value of `window-point' of WINDOW."
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(+ (nth 1 edges) (nth 1 pos-in-window)))))))
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(defun frame-root-window-p (window)
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"Return non-nil if WINDOW is the root window of its frame."
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"Return t if WINDOW is the root window of its frame."
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(eq window (frame-root-window window)))
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(defun window--subtree (window &optional next)
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@ -383,7 +383,7 @@ nsberror (Lisp_Object spec)
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}
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DEFUN ("buffer-live-p", Fbuffer_live_p, Sbuffer_live_p, 1, 1, 0,
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doc: /* Return non-nil if OBJECT is a buffer which has not been killed.
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doc: /* Return t if OBJECT is a buffer which has not been killed.
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Value is nil if OBJECT is not a buffer or if it has been killed. */)
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(Lisp_Object object)
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{
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@ -10053,7 +10053,7 @@ The list of capabilities can include one or more of the following:
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DEFUN ("init-image-library", Finit_image_library, Sinit_image_library, 1, 1, 0,
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doc: /* Initialize image library implementing image type TYPE.
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Return non-nil if TYPE is a supported image type.
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Return t if TYPE is a supported image type.
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If image libraries are loaded dynamically (currently only the case on
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MS-Windows), load the library for TYPE if it is not yet loaded, using
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@ -384,7 +384,7 @@ If FRAME is omitted or nil, it defaults to the selected frame. */)
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DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p,
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Swindow_minibuffer_p, 0, 1, 0,
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doc: /* Return non-nil if WINDOW is a minibuffer window.
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doc: /* Return t if WINDOW is a minibuffer window.
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WINDOW must be a valid window and defaults to the selected one. */)
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(Lisp_Object window)
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{
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