--text follows this line-- When editing a Python/Django models.py file for a very large database, I was reformatting the database fields to be used elsewhere in the project. So I used a macro to edit 330 lines to change the format from: some_database_column_name = models.CharField(max_length=10, etc...) to the following to be inserted into a Python dictionary: 'some_database_column_name': Doing a simple macro of: F3 M-m ' C-s = C-b C-b ': C-k C-n F4 and executing it for 329 more iterations takes 31.96 and 29.19 seconds! When executing a similar macro, but instead of C-n, I was using "M-x forward-line" to go to the next line, it only took 8.66 and 8.86 seconds. Another similar macro, but without the C-n and then executing the macro over the highlighted region with C-x C-k r (for apply-macro-to-region-lines), it only takes 5.83 and 5.79 seconds! I have run several tests in emacs over the last several days and have gotten predictable results. The above timed tests were always performed in a "fresh" instance, started with "$ emacs -Q" and I had always rebooted emacs in between test times to ensure nothing was cached. I am only displaying the results of 4 tests above, but I have tested this SEVERAL times in many different configurations. I have also tested this on Emacs 26.1 from the Debian Stable repos and get the exact same results. I initially sought out help and tips on reddit, and other users have tried running the macro on their machines and had similar results. It was from other users' input that we discovered that "M-x fo-lin" and "C-x C-k r" give us macro execution times that are reasonable and comparable to vim (which only takes 3.26 seconds for the equivalent macro). In GNU Emacs 27.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.23, cairo version 1.16.0) of 2020-11-07, modified by Debian built on x86-ubc-01 Windowing system distributor 'The X.Org Foundation', version 11.0.12009000 System Description: Debian GNU/Linux bullseye/sid Recent messages: For information about GNU Emacs and the GNU system, type C-h C-a. Configured using: 'configure --build x86_64-linux-gnu --prefix=/usr --sharedstatedir=/var/lib --libexecdir=/usr/lib --localstatedir=/var/lib --infodir=/usr/share/info --mandir=/usr/share/man --enable-libsystemd --with-pop=yes --enable-locallisppath=/etc/emacs:/usr/local/share/emacs/27.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/27.1/site-lisp:/usr/share/emacs/site-lisp --with-sound=alsa --without-gconf --with-mailutils --build x86_64-linux-gnu --prefix=/usr --sharedstatedir=/var/lib --libexecdir=/usr/lib --localstatedir=/var/lib --infodir=/usr/share/info --mandir=/usr/share/man --enable-libsystemd --with-pop=yes --enable-locallisppath=/etc/emacs:/usr/local/share/emacs/27.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/27.1/site-lisp:/usr/share/emacs/site-lisp --with-sound=alsa --without-gconf --with-mailutils --with-cairo --with-x=yes --with-x-toolkit=gtk3 --with-toolkit-scroll-bars 'CFLAGS=-g -O2 -fdebug-prefix-map=/build/emacs-6jKC2B/emacs-27.1+1=. -fstack-protector-strong -Wformat -Werror=format-security -Wall' 'CPPFLAGS=-Wdate-time -D_FORTIFY_SOURCE=2' LDFLAGS=-Wl,-z,relro' Configured features: XPM JPEG TIFF GIF PNG RSVG CAIRO SOUND GPM DBUS GSETTINGS GLIB NOTIFY INOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE HARFBUZZ M17N_FLT LIBOTF ZLIB TOOLKIT_SCROLL_BARS GTK3 X11 XDBE XIM MODULES THREADS LIBSYSTEMD JSON PDUMPER LCMS2 GMP Important settings: value of $LANG: en_US.UTF-8 value of $XMODIFIERS: @im=ibus locale-coding-system: utf-8-unix Major mode: Lisp Interaction Minor modes in effect: tooltip-mode: t global-eldoc-mode: t 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 rmc puny dired dired-loaddefs format-spec rfc822 mml easymenu mml-sec password-cache epa derived epg epg-config gnus-util rmail rmail-loaddefs text-property-search time-date subr-x seq byte-opt gv bytecomp byte-compile cconv mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader cl-loaddefs cl-lib sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils tooltip eldoc electric uniquify ediff-hook vc-hooks lisp-float-type mwheel term/x-win x-win term/common-win x-dnd tool-bar dnd fontset image regexp-opt fringe tabulated-list replace newcomment text-mode elisp-mode lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow isearch timer select scroll-bar mouse jit-lock font-lock syntax facemenu font-core term/tty-colors frame minibuffer 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 composite charscript charprop case-table epa-hook jka-cmpr-hook help simple abbrev obarray 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 threads dbusbind inotify lcms2 dynamic-setting system-font-setting font-render-setting cairo move-toolbar gtk x-toolkit x multi-tty make-network-process emacs) Memory information: ((conses 16 45099 9140) (symbols 48 6002 1) (strings 32 15434 2143) (string-bytes 1 501833) (vectors 16 10078) (vector-slots 8 129851 8944) (floats 8 19 39) (intervals 56 244 0) (buffers 1000 11)) -- Very respectfully, *Ted Lavarias* *ted.lavarias@gmail.com *