Re: 26.0.50; CEDET stickyfunc-mode broken after recent removal of default-FOO variables

[Clément Pit--Claudel]

I could not reproduce this issue.  What is cedet-load-path?

On 2016-11-16 21:32, Andrew Moore wrote:
> CEDET stickyfunc-mode appears to be broken after recent commits:
> 
>     e6681b27394a23979c3aef3925f78ef9cd75bd32 (“Nix more uses of default-FOO 
> variables (Bug#24946)”),
>     73d47d22197175f08b2dd62e76d7138872e611d2 (“Remove obsolete default-FOO 
> variables”)
> 
> Being enamored of stickyfunc-mode, I’m hoping that someone might point me in 
> the direction of a resolution.  What I have so far is only a partial 
> workaround.
> 
> Prior to the above commits, CEDET and stickyfunc-mode were enabled globally 
> via the following lines in my .emacs:
> 
>     (load (concat cedet-load-path "/semantic/loaddefs.el"))
>     (semantic-mode)
>     (mapc
>       (lambda (mode)
>         (funcall mode 1))
>       '(global-semantic-idle-summary-mode
>        global-semantic-idle-completions-mode
>        global-semantic-idle-scheduler-mode
>        global-semanticdb-minor-mode))
>        global-semantic-stickyfunc-mode))
> 
> (This might be more properly done via customization, but the effect should be 
> the same)
> 
> After commits removing the obsolete `default-FOO’ variables, including 
> `default-header-line-format', Emacs drops into the debugger on startup as 
> result of the above lines.  One work around is to enable stickyfunc-mode via 
> major mode hooks.  E.g., after commenting out the last line above 
> `global-semantic-stickyfunc-mode’, stickyfunc mode can be enabled in C mode 
> with the following hook:
> 
>     (defun c-mode-setup ()
>       "Adjust C mode environment."
>       (semantic-mode)
>       (make-local-variable 'header-line-format)
>       (setq header-line-format
>                '(:eval
>                  (list
>                   (propertize " " 'display
>                                     '((space :align-to 0)))
>                   (semantic-stickyfunc-fetch-stickyline))))
>       (semantic-stickyfunc-mode))
> 
>     (add-hook 'c-mode-common-hook #'c-mode-setup)
> 
> Unfortunately, adding this to emacs-lisp-mode-hook causes Emacs to again drop 
> into the debugger on startup.  In fact, whereas stickyfunc-mode works with C 
> code, it seems not to have worked with Lisp for a while now (i.e., prior to 
> removal of the `default-FOO’ variables).  Obviously it would help to identify 
> the breaking commit, but I’m not even sure what time frame to examine.
> 
> In the mean time, perhaps someone could offer some insight into what’s going 
> on?  Why did removal of the obsolete variable `default-header-line-format’ 
> wreck such havoc?  Should I be looking at CEDET code, or might the problem be 
> of a more generic nature that could be affecting other code that I haven’t 
> come across yet?  Once enough information has been gathered, a bug report 
> will be submitted.  Thank you!
> -AM
> 
> In GNU Emacs 26.0.50.3 (x86_64-apple-darwin15.6.0, NS appkit-1404.47 Version 
> 10.11.6 (Build 15G1108))
> of 2016-11-16 built on vesta.slewsys.org
> Repository revision: dc4b8a0c329a9d9e56e6be63cb4a0f59a952b07f
> Windowing system distributor 'Apple', version 10.3.1404
> Recent messages:
> For information about GNU Emacs and the GNU system, type C-h C-a.
> /opt/src/programming/emacs/emacs
> mwheel-scroll: End of buffer [4 times]
> Compilation exited abnormally with code 2
> 
> Configured using:
> 'configure --prefix=/opt --with-ns CC=/usr/bin/clang
> CXX=/usr/bin/clang++'
> 
> Configured features:
> JPEG RSVG IMAGEMAGICK DBUS NOTIFY ACL GNUTLS LIBXML2 ZLIB
> TOOLKIT_SCROLL_BARS NS
> 
> Important settings:
>  value of $LC_ALL: en_US.UTF-8
>  value of $LANG: en_US.UTF-8
>  locale-coding-system: utf-8-unix
> 
> Major mode: Lisp Interaction
> 
> Minor modes in effect:
>  shell-dirtrack-mode: t
>  tooltip-mode: t
>  global-eldoc-mode: t
>  electric-indent-mode: t
>  mouse-wheel-mode: t
>  tool-bar-mode: t
>  menu-bar-mode: t
>  file-name-shadow-mode: t
>  global-font-lock-mode: t
>  font-lock-mode: t
>  blink-cursor-mode: t
>  auto-composition-mode: t
>  auto-encryption-mode: t
>  auto-compression-mode: t
>  line-number-mode: t
>  transient-mark-mode: t
> 
> Load-path shadows:
> None found.
> 
> Features:
> (shadow sort mail-extr emacsbug message subr-x puny seq byte-opt gv
> bytecomp byte-compile cl-extra help-mode cconv cl-loaddefs pcase cl-lib
> dired dired-loaddefs format-spec rfc822 mml easymenu mml-sec
> password-cache epa derived epg epg-config gnus-util rmail rmail-loaddefs
> mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils
> mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr
> mail-utils compile shell pcomplete comint ansi-color ring time-date
> mule-util tooltip eldoc electric uniquify ediff-hook vc-hooks
> lisp-float-type mwheel term/ns-win ns-win ucs-normalize term/common-win
> tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment
> elisp-mode lisp-mode prog-mode register page menu-bar rfn-eshadow timer
> select scroll-bar mouse jit-lock font-lock syntax facemenu font-core
> term/tty-colors frame cl-generic cham georgian utf-8-lang misc-lang
> vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms cp51932
> hebrew greek romanian slovak czech european ethiopic indian cyrillic
> chinese charscript case-table epa-hook jka-cmpr-hook help simple abbrev
> obarray minibuffer cl-preloaded nadvice loaddefs button faces cus-face
> macroexp files text-properties overlay sha1 md5 base64 format env
> code-pages mule custom widget hashtable-print-readable backquote
> dbusbind kqueue cocoa ns multi-tty make-network-process emacs)
> 
> Memory information:
> ((conses 16 215600 6717)
> (symbols 48 20559 0)
> (miscs 40 52 123)
> (strings 32 20332 6483)
> (string-bytes 1 663313)
> (vectors 16 35782)
> (vector-slots 8 676057 7085)
> (floats 8 186 173)
> (intervals 56 582 0)
> (buffers 976 13))
> 
> 
>

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