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charset="UTF-8" Saving a small file in emacs -q seems to take 1 to 5 seconds. I assume this because the 'Rapid Refresh' app I am using takes 1 to 5 seconds to notice the file change when I change it with emacs but 0 seconds when changed with another editor. . I have done a recent and fresh install of emacs to see if it fixed it but had no luck. # set up rapid refresh app npx create-expo-app@latest -t tabs@50 cd my-app npx expo start w http://localhost:8082/ emacs -q 'app/(tabs)/index.tsx' ;; added a letter to a welcome string. M-x save-buffer Expected result: the 'Fast Refresh' of expo should instantly update the web page. Actual result: a variable 1 to 6 second delay (repeating same process) before update Actual result with neovim: page save leads to instant update every time. I tried disabling these with no effect on the time (setq before-save-hook nil) (setq after-save-hook nil) (setq vc-handled-backends nil) I profiled save-buffer and it was '0 0% ...' In GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.37, cairo version 1.16.0) of 2023-05-13 built on no-control-x1c Repository revision: 7791907c3852e6ec197352e1c3d3dd8487cc04f5 Repository branch: master Windowing system distributor 'The X.Org Foundation', version 11.0.12302000 System Description: Ubuntu 23.10 Configured using: 'configure --with-tree-sitter --with-mailutils --with-json --with-xwidgets --with-modules --with-imagemagick --prefix=/home/no-control/installs --bindir=/home/no-control/bin --with-native-compilation=no --with-xft' Configured features: CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ IMAGEMAGICK JPEG JSON LCMS2 LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES NOTIFY INOTIFY PDUMPER PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS TREE_SITTER WEBP X11 XDBE XIM XINPUT2 XPM XWIDGETS GTK3 ZLIB Important settings: value of $LANG: en_GB.UTF-8 value of $XMODIFIERS: @im=ibus locale-coding-system: utf-8-unix Major mode: Fundamental Minor modes in effect: tooltip-mode: t global-eldoc-mode: t show-paren-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 line-number-mode: t indent-tabs-mode: t transient-mark-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t Load-path shadows: None found. Features: (shadow sort mail-extr emacsbug message mailcap yank-media puny dired dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg rfc6068 epg-config gnus-util text-property-search mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils extra-functions thingatpt help-fns radix-tree cl-print byte-opt gv bytecomp byte-compile debug backtrace help-mode find-func profiler time-date subr-x cl-loaddefs cl-lib rmc iso-transl tooltip cconv eldoc paren electric uniquify ediff-hook vc-hooks lisp-float-type elisp-mode 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 lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow isearch easymenu timer select scroll-bar mouse jit-lock font-lock syntax font-core term/tty-colors frame minibuffer nadvice seq simple cl-generic indonesian philippine 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 emoji-zwj charscript charprop case-table epa-hook jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs theme-loaddefs faces cus-face macroexp files window text-properties overlay sha1 md5 base64 format env code-pages mule custom widget keymap hashtable-print-readable backquote threads xwidget-internal dbusbind inotify lcms2 dynamic-setting system-font-setting font-render-setting cairo move-toolbar gtk x-toolkit xinput2 x multi-tty make-network-process emacs) Memory information: ((conses 16 55658 12506) (symbols 48 6603 0) (strings 32 18066 1619) (string-bytes 1 523080) (vectors 16 52241) (vector-slots 8 1066424 14413) (floats 8 38 50) (intervals 56 663 0) (buffers 984 18)) --000000000000ac607606126646d6 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Saving a small file in emacs -q seems to take 1=C2=A0= to 5 seconds.

I assume this because the 'Rapi= d Refresh' app I am using takes 1 to 5 seconds to notice=C2=A0
the file change when I change it with emacs but 0 seconds when changed wi= th another editor.
.
I have done a recent and f= resh install of emacs to see if it fixed it but had no luck.
=
# set up rapid refresh app
npx create-expo-app= @latest -t tabs@50
cd my-app
npx expo start
w
http://localhost:8082/
emacs -q 'app/(tabs)/index.tsx'
;; added a letter t= o a welcome string.
M-x save-buffer

Expected result: =C2=A0the &#= 39;Fast Refresh' of expo should instantly update
the web page.
Actual result: a variable 1 to 6 second delay (repeating same process)before update

Actual result with neovim: page save leads to instant= update every time.

I tried disabling these with no effect on the ti= me

=C2=A0(setq before-save-hook nil)
=C2=A0(setq after-save-hook = nil)
=C2=A0(setq vc-handled-backends nil)

I profiled save-buffer = and it was
'0 0% ...'



In GNU Emacs 30.0.50 (build= 1, x86_64-pc-linux-gnu, GTK+ Version
=C2=A03.24.37, cairo version 1.16.= 0) of 2023-05-13 built on no-control-x1c
Repository revision: 7791907c38= 52e6ec197352e1c3d3dd8487cc04f5
Repository branch: master
Windowing sy= stem distributor 'The X.Org Foundation', version 11.0.12302000
S= ystem Description: Ubuntu 23.10

Configured using:
=C2=A0'conf= igure --with-tree-sitter --with-mailutils --with-json
=C2=A0--with-xwidg= ets --with-modules --with-imagemagick
=C2=A0--prefix=3D/home/no-control/= installs --bindir=3D/home/no-control/bin
=C2=A0--with-native-compilation= =3Dno --with-xft'

Configured features:
CAIRO DBUS FREETYPE GI= F GLIB GMP GNUTLS GSETTINGS HARFBUZZ IMAGEMAGICK
JPEG JSON LCMS2 LIBOTF = LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES
NOTIFY INOTIFY PDUMPER PN= G RSVG SECCOMP SOUND SQLITE3 THREADS TIFF
TOOLKIT_SCROLL_BARS TREE_SITTE= R WEBP X11 XDBE XIM XINPUT2 XPM XWIDGETS
GTK3 ZLIB

Important sett= ings:
=C2=A0 value of $LANG: en_GB.UTF-8
=C2=A0 value of $XMODIFIERS:= @im=3Dibus
=C2=A0 locale-coding-system: utf-8-unix

Major mode: F= undamental

Minor modes in effect:
=C2=A0 tooltip-mode: t
=C2= =A0 global-eldoc-mode: t
=C2=A0 show-paren-mode: t
=C2=A0 electric-in= dent-mode: t
=C2=A0 mouse-wheel-mode: t
=C2=A0 tool-bar-mode: t
= =C2=A0 menu-bar-mode: t
=C2=A0 file-name-shadow-mode: t
=C2=A0 global= -font-lock-mode: t
=C2=A0 font-lock-mode: t
=C2=A0 blink-cursor-mode:= t
=C2=A0 line-number-mode: t
=C2=A0 indent-tabs-mode: t
=C2=A0 tr= ansient-mark-mode: t
=C2=A0 auto-composition-mode: t
=C2=A0 auto-encr= yption-mode: t
=C2=A0 auto-compression-mode: t

Load-path shadows:=
None found.

Features:
(shadow sort mail-extr emacsbug message= mailcap yank-media puny dired
dired-loaddefs rfc822 mml mml-sec passwor= d-cache epa derived epg rfc6068
epg-config gnus-util text-property-searc= h mm-decode mm-bodies mm-encode
mail-parse rfc2231 mailabbrev gmm-utils = mailheader sendmail rfc2047
rfc2045 ietf-drums mm-util mail-prsvr mail-u= tils extra-functions
thingatpt help-fns radix-tree cl-print byte-opt gv = bytecomp byte-compile
debug backtrace help-mode find-func profiler time-= date subr-x
cl-loaddefs cl-lib rmc iso-transl tooltip cconv eldoc paren = electric
uniquify ediff-hook vc-hooks lisp-float-type elisp-mode mwheel<= br>term/x-win x-win term/common-win x-dnd tool-bar dnd fontset image
reg= exp-opt fringe tabulated-list replace newcomment text-mode lisp-mode
pro= g-mode register page tab-bar menu-bar rfn-eshadow isearch easymenu
timer= select scroll-bar mouse jit-lock font-lock syntax font-core
term/tty-co= lors frame minibuffer nadvice seq simple cl-generic
indonesian philippin= e cham georgian utf-8-lang misc-lang vietnamese
tibetan thai tai-viet la= o korean japanese eucjp-ms cp51932 hebrew greek
romanian slovak czech eu= ropean ethiopic indian cyrillic chinese
composite emoji-zwj charscript c= harprop case-table epa-hook
jka-cmpr-hook help abbrev obarray oclosure c= l-preloaded button loaddefs
theme-loaddefs faces cus-face macroexp files= window text-properties
overlay sha1 md5 base64 format env code-pages mu= le custom widget keymap
hashtable-print-readable backquote threads xwidg= et-internal dbusbind
inotify lcms2 dynamic-setting system-font-setting f= ont-render-setting
cairo move-toolbar gtk x-toolkit xinput2 x multi-tty<= br>make-network-process emacs)

Memory information:
((conses 16 55= 658 12506)
=C2=A0(symbols 48 6603 0)
=C2=A0(strings 32 18066 1619)=C2=A0(string-bytes 1 523080)
=C2=A0(vectors 16 52241)
=C2=A0(vector= -slots 8 1066424 14413)
=C2=A0(floats 8 38 50)
=C2=A0(intervals 56 66= 3 0)
=C2=A0(buffers 984 18))
--000000000000ac607606126646d6--