Xah Emacs Blog
A hole to fall in.
Update Highlights
major update.
massively revamped.
more update
environment variable complexity
- For coders. Emacs.
- Why Programing is Extremely Complex.
- Took 3 hours to debug, why is
C:/Python39/- in my emacs
exec-path, even when i removed it from Microsoft Windows environment variable in registry.
- turns out, because i was launching emacs via AutoHotkey, and it was still using the old registry value.
- restart windows solved the problem.
- in the process, also debugged or improved many of my init files.
- when checking a variable, use boundp instead just the symbol.
- eg
- (when (boundp 'icomplete-vertical-mode-minibuffer-map) ...)
- not:
- (when 'icomplete-vertical-mode-minibuffer-map ...)
code update.
- massively rewrote the code to get image width and height, so it doesn't need the mega bloated imagemagick.
- Elisp: Get Image Size 🚀
- added
length=length>length<takentake
- major update
- Elisp: Start External Process
code update
code update
major rewrite.
updates
- 2024-11-09
- Emacs: Xah Fly Keys 📦
xah-close-current-buffernow has a option xah-create-buffer-backup
updates
misc updates.
Replace replace-regexp-in-string by string-replace
emacs lisp. in your code, replace all replace-regexp-in-string by string-replace (new in 2022).
if you are not doing regex.
Stop Using Lisp Cons
- Programing language, regarding lisp cons.
- This is the final say.
- The common lispers, have always been, the most idiotic bunch, in the past 30 years as far as i get to know them.
- Lisp cons, to this day, is the most idiotic concept in programing language history.
- It is lisp cons, that killed lisp. Except, clojure, which ditched cons entirely.
- Nobody the faak do linked list today.
- It is not in all other langs since y2k.
- Only the lisp fanatics, still like chew it like fine wine, thinking, how great it is or was.
- the way to fix the lisp cons, is to ban any list that is not a proper list.
- that should be done since y2k.
- but today, there is more reason to not use lisp list, even proper list, due to parallel computation.
- In your lisp code, go thru it and find all use of cons. Replace it with vector.
- And for list, check if you are using it as stack datatype. If not, replace it with vector.
- You'll have more efficient code.
- Exception is association list. Check if you are using it as ordered dictionary. If so, and length is say less than 20, stays. Else, replace it with real hashtable.
- For property list and symbol property list, they need to stay, because backward compatibility issues.
- 2024-10-09
- Emacs: Xah Fly Keys 📦
- added
xah-page-upandxah-page-downcommands.
- 2024-10-07
- Emacs: Xah Fly Keys 📦
- major fix on many commands that works on text block. few months ago made a change so that blank lines containing space or tab is not considered blank. the result is not good. now fixed. also, renamed
xah-get-pos-of-blocktoxah-fly-get-pos-blocketc. - xah-run-current-file-map, py3 changed to run python, not python3.
- fixed a bug in
xah-select-text-in-quote.
major bug fix.
updates.
updates.
- 2024-09-27
- Emacs: Xah Fly Keys 📦
- major key reorg. removed most starting with C-x, and other change. see below.
- Removed most keys starting with C-x. Reason is when you do M-x for some rarely used command, the C-x binding shows in minibuffer in precedence over leader key sequence. This makes it harder to know the easier key.
- Removed many C- keys such as C-p for moving cursor right. They were there so that emacs default key users might use them. But those people are not likely to adopt Xah Fly Keys anyway. Beginners simply press arrow keys.
- Added some 10 plus keys for kmacro commands. These are almost never used but good to have keys for the handful advanced emacs users. Each now has a leader key sequence. The exact key is to be changed.
(setq word-wrap-by-category t)
thanks to jamesni.
- 2024-09-24
- Emacs: Xah Fly Keys 📦
- added arrow keys to
xah-previous-user-bufferxah-next-user-bufferxah-previous-emacs-bufferxah-next-emacs-buffer. you can press arrow keys to repeat. see docstring.
also thanks to emiltoacs for improvement.
- added new function
string-replace - Elisp: String Functions
translate-region subst-char-in-string ;; this is in C subst-char-in-region
can be used for my asccify command
repost.
added a common idiom
- 2024-09-16
- Emacs: Xah Fly Keys 📦
- Major change. Removed
xah-fly-shared-map. And xah-fly-key-map is now not declared obsolete. xah-fly-shared-mapwas introduced by Will Dey (and Dan Langlois) in 2020-04-18 during the key engine rewrite usingset-transient-map.- The idea of
xah-fly-shared-mapis that it serves as a parent of xah-fly-command-map and xah-fly-insert-map. - This allows setting control modifier combinations such as C-t also be part of Xah Fly Keys binding, thus is automatically unbound when the mode is turned off, as it should.
- I think it makes things more complicated than worth.
- 2024-09-12
- Emacs: Xah Find Replace (xah-find.el) 📦
xah-find-undo-last-replacenew.
new version out. buy it. thanks. Buy Xah Emacs Tutorial
updates
LISP Girl- 2024-08-29
- Emacs: Xah JS Mode (JavaScript) 📦
xah-js-eval-lineandxah-js-eval-regionnow take universal-argument, to insert result in buffer.
- 2024-08-29
- Emacs: Xah PowerShell Mode 📦
- new.
xah-pwsh-eval-region,xah-pwsh-eval-current-line
- 2024-08-29
- Emacs: Xah Wolfram Mode 📦
xah-wolfram-eval-regionandxah-wolfram-eval-current-linecan takeuniversal-argumentto insert result to buffer.
which editor by default highlight the current line? vscode, sublime, textmate, or other?
updated
updates
updates
LISP Trumpupdates
more updates.
master emacs lisp loop and iteration. major updates.
- 2024-08-13
- Emacs: Xah Wolfram Mode 📦
xah-wolfram-eval-regionnow work on current text block when no text selection.
Emacs org mode security emergency
just org mode is affected, not emacs.
but there's new emacs release, emacs 29.4, that fixed the org mode problem.
updates
- 2024-07-25
- Emacs: Xah Fly Keys 📦
xah-close-current-buffernow also record dired buffer, so canxah-open-last-closed
- 2024-07-25
- Emacs: Xah HTML Mode 📦
- new:
xah-html-insert-page-template,xah-html-move-text-block
new. pepe anti emacs pill
- 2024-07-15
- Emacs: Xah Dired Mode (xah-dired.el) 📦
xah-dired-toggle-human-readable-sizenew.- xah-dired-metadata-remover-path renamed to xah-dired-exiftool-path
- 2024-07-15
- Emacs: Xah HTML Mode 📦
xah-html-make-citationnow use TORTOISE SHELL BRACKET.xah-html--get-youtube-idrenamed toxah-get-youtube-id.xah-normalize-youtube-urlnew.- image link functions now use
xah-get-image-dimensionsinstead of calling imagemagick, unless necessary.
minor updates.
updates
updates
dired-do-find-marked-filesopen all marked files.- Emacs Init: Dired Config Emacs: File Manager, dired
- Emacs: shell vs eshell vs term
- 2024-07-03
- Emacs: Xah Fly Keys 📦
xah-shrink-whitespacesminor refactor. removedxah-delete-blank-lines,xah-fly-delete-spaces
- 2024-07-05
- Emacs: Xah HTML Mode 📦
xah-html-youtube-normalize-urlnow support query string.xah-html-keyboard-shortcut-markupbetter, now normalize command key opt key etc.xah-html-pop-back-source-code,xah-html-toggle-syntax-color-tagschanged cursor position requirement. experimental.xah-html-change-current-tagchanged cursor position requirement.
major updates