If /usr/share/emacs26/site-lisp/subdirs.el has previously been
updated, it is not necessary to apply the following modifications.
Since subdirs.el is loaded before site-init is inhibited, it can be
used as replacement for startup.el. Create
/usr/share/emacs26/site-lisp/subdirs.el:
;; |:here:|cat<<'EOF'>/usr/share/emacs26/site-lisp/subdirs.el(defvarpackage--builtin-versions;; Mostly populated by loaddefs.el via autoload-builtin-package-versions.(purecopy`((emacs.,(version-to-listemacs-version))))"Alist giving the version of each versioned builtin package.I.e. each element of the list is of the form (NAME . VERSION) whereNAME is the package name as a symbol, and VERSION is its versionas a list.")(defunpackage--description-file(dir)(concat(let((subdir(file-name-nondirectory(directory-file-namedir))))(if(string-match"\\([^.].*?\\)-\\([0-9]+\\(?:[.][0-9]+\\|\\(?:pre\\|beta\\|alpha\\)[0-9]+\\)*\\)"subdir)(match-string1subdir)subdir))"-pkg.el"))(defconstdebian-emacs-flavor'emacs26"A symbol representing the particular debian flavor of emacs running.Something like 'emacs20, 'xemacs20, etc.")(if(fboundp'normal-top-level-add-subdirs-to-load-path)(normal-top-level-add-subdirs-to-load-path))(let((local-site-lisp"/usr/local/share/emacs/26.3/site-lisp/"))(make-directorylocal-site-lispt)(if(not(memberlocal-site-lispload-path))(setqload-path(conslocal-site-lispload-path))))EOF;; |:here:| `
Now add the debian specific startup to
/usr/share/emacs26/site-lisp/site-start.el:
In Emacs, the point is the current position of cursor:
Some text POINTat some position
continued on next line. Lorem ipsum dolor.
The key sequence C-SPC sets the position of the mark to the
position of point:
Some text MARKPOINTat some position
continued on next line. Lorem ipsum dolor.
When point is moved, the mark stays in place:
Some text MARKat some position
continuedPOINT on next line. Lorem ipsum dolor.
The region is the text between mark and point:
at some position
continued
C-x C-x exchanges point and mark. It also activates the
region:
Some text POINTat some position
continuedMARK on next line. Lorem ipsum dolor.
The region can always be moved or copied onto the kill ring, which
acts like a clipboard with a history of killed/copied strings. If the
region is active (highlighted), pressing BACKSPC removes the
region without copying it to the kill ring.
Emacs
Notepad
Description
C-SPC
SHIFT
mark beginning of region
C-w
C-x
move region to kill ring
M-w
C-c
copy region to kill ring
C-y
C-v
insert last string from kill ring
M-y
directly after C-y or M-y replaces inserted string with previous string from kill ring
C-u - M-y
directly after C-y or M-y replaces inserted string with next string from kill ring
Emacs allows to handle line ends without explicitely setting the mark:
Emacs
Notepad
Description
C-k
S-end C-x
move line without line break to kill ring
C-k C-k
S-end right C-x
move line to kill ring
C-k C-k C-y
S-end right C-c
copy line to kill ring
Emulating the special kill-line functionality with the region is more involved:
The Emacs: Undo Tree package realizes the previously described tree
structure removing the recursion from branches. It offers a visual
interface (C-x u) for easy navigation and fancy display of
diffs .
Eclipse extensions are realized via Java plugins. The extension
points can then be assigned to key sequences. In order to create a
plugin, an entire Eclipse Java package must to be created and all
kinds of non-evident manual actions have to be executed. EASE makes
it better with Rhino (Javascript) and Jython integration. Python is
supposedly fully integrated since 2017 (not verfied, not
investigated). See also section 8.7.1, Integrated Development Environment.
The equivalent of a “package” in Emacs is just a simple file
(conventionally with the extension .el (but not necessarily)).
Let’s put it in ~/.emacs.d as ~/.emacs.d/my-file.el.
The file contains an interactive function, suitable for assignment to
a key sequence:
Emacs comes with table.el, which allows editing ASCII tables in a
WYSIWYG manner.
To recognize tables in a document, enter M-x table-recognize
RET. Besides the Table menu there are shortcuts accessible
inside table cells with the prefix C-c C-c. C-c C-c
C-hinside a table cell show the key bindings.
Kann auch mit M-x table-recognize im table mode bearbeitet
werden. Im table mode gilt innerhalb der Tabelle die Belegung mit
Präfix C-c C-c (Belegungshilfe mit C-c C-c C-h). Table
mode beenden mit M-x table-unrecognize.
The here tag is a tag which is directly reachable by navigation keys
M-up (previous tag) and M-down (next tag). Initially,
the here tag symbol is undefined. The key sequence M-h sets the
here tag symbol to here. The here tag symbol can be set to any
symbol with C-u M-up or C-u M-down.
M-i inserts a symbol tag, M-k deletes the symbol tag
near point.
The alternate delimiter set from a delimiter stack can be activated
with C-c C-x. The delimiter stack and quick help is shown with
C-c C-d C-v.
An independent delimiter is defined for enclosing symbols at point
with M-e (M-x symbol-tag-enclose). The enclosing
delimiter can be defined with a prefix arg selecting an entry from the
delimiter set menu e.g. C-u 1 3 M-e (see F8).
There are key sequences available for marking the block of lines
between two symbol tags with the same symbol (see table 16.1). With a prefix arg, teh tag symbol can
be set explicitely.
table 16.1 Mark line block between two symbol tags¶
Shortcut
Command
w/first line
w/last line
C-c r r
M-x symbol-tag-region
C-c r 1
M-x symbol-tag-region-1
yes
C-c r 2
M-x symbol-tag-region-2
yes
C-c r 3
M-x symbol-tag-region-3
yes
yes
A grep-find(), which constructs a correctly quoted pattern for
symbol tags is available as M-g (M-x
symbol-tag-grep-find).
An occur(), which constructs a correctly quoted pattern for
symbol tags is available as M-o (M-x symbol-tag-occur).
C-h m shows mode help. In help buffer move to section about
symbol-tag minor-mode.
C-h k M-<down> shows help for key bound to
next-symbol-tag()
C-h b shows current key bindings. M-x occur
RET -symbol-tag RET in buffer *Help* shows keys for symbol
movement.