vim-fugitive deletes hunk summary of vim-gitgutter after updatetime passed the first time

[schlimmchen]

environment

VIM - Vi IMproved 8.2 (2019 Dec 12, compiled Aug 11 2020 17:00:59)
Included patches: 1-716
Modified by team+vim@tracker.debian.org
Compiled by team+vim@tracker.debian.org
Huge version with GTK3 GUI.  Features included (+) or not (-):
+acl               -farsi             +mouse_sgr         +tag_binary
+arabic            +file_in_path      -mouse_sysmouse    -tag_old_static
+autocmd           +find_in_path      +mouse_urxvt       -tag_any_white
+autochdir         +float             +mouse_xterm       +tcl
-autoservername    +folding           +multi_byte        +termguicolors
+balloon_eval      -footer            +multi_lang        +terminal
+balloon_eval_term +fork()            -mzscheme          +terminfo
+browse            +gettext           +netbeans_intg     +termresponse
++builtin_terms    -hangul_input      +num64             +textobjects
+byte_offset       +iconv             +packages          +textprop
+channel           +insert_expand     +path_extra        +timers
+cindent           +ipv6              +perl              +title
+clientserver      +job               +persistent_undo   +toolbar
+clipboard         +jumplist          +popupwin          +user_commands
+cmdline_compl     +keymap            +postscript        +vartabs
+cmdline_hist      +lambda            +printer           +vertsplit
+cmdline_info      +langmap           +profile           +virtualedit
+comments          +libcall           -python            +visual
+conceal           +linebreak         +python3           +visualextra
+cryptv            +lispindent        +quickfix          +viminfo
+cscope            +listcmds          +reltime           +vreplace
+cursorbind        +localmap          +rightleft         +wildignore
+cursorshape       +lua               -ruby              +wildmenu
+dialog_con_gui    +menu              +scrollbind        +windows
+diff              +mksession         +signs             +writebackup
+digraphs          +modify_fname      +smartindent       +X11
+dnd               +mouse             +sound             -xfontset
-ebcdic            +mouseshape        +spell             +xim
+emacs_tags        +mouse_dec         +startuptime       +xpm
+eval              +mouse_gpm         +statusline        +xsmp_interact
+ex_extra          -mouse_jsbterm     -sun_workshop      +xterm_clipboard
+extra_search      +mouse_netterm     +syntax            -xterm_save
   system vimrc file: "$VIM/vimrc"
     user vimrc file: "$HOME/.vimrc"
 2nd user vimrc file: "~/.vim/vimrc"
      user exrc file: "$HOME/.exrc"
  system gvimrc file: "$VIM/gvimrc"
    user gvimrc file: "$HOME/.gvimrc"
2nd user gvimrc file: "~/.vim/gvimrc"
       defaults file: "$VIMRUNTIME/defaults.vim"
    system menu file: "$VIMRUNTIME/menu.vim"
  fall-back for $VIM: "/usr/share/vim"
Compilation: gcc -c -I. -Iproto -DHAVE_CONFIG_H -DFEAT_GUI_GTK  -pthread -I/usr/include/gtk-3.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/dbus-1.0 -I/usr/lib/x86_64-linux-gnu/dbus-1.0/include -I/usr/include/gtk-3.0 -I/usr/include/gio-unix-2.0 -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/fribidi -I/usr/include/harfbuzz -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/uuid -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -Wdate-time  -g -O2 -fdebug-prefix-map=/build/vim-It0QT5/vim-8.2.0716=. -fstack-protector-strong -Wformat -Werror=format-security -D_REENTRANT -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1       
Linking: gcc   -Wl,-E  -Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now -Wl,--as-needed -o vim   -lgtk-3 -lgdk-3 -lpangocairo-1.0 -lpango-1.0 -lharfbuzz -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0 -lglib-2.0 -lSM -lICE -lXpm -lXt -lX11 -lXdmcp -lSM -lICE  -lm -ltinfo  -lselinux  -lcanberra -lacl -lattr -lgpm -ldl  -L/usr/lib -llua5.2 -Wl,-E  -fstack-protector-strong -L/usr/local/lib  -L/usr/lib/x86_64-linux-gnu/perl/5.30/CORE -lperl -ldl -lm -lpthread -lcrypt  -L/usr/lib/python3.8/config-3.8-x86_64-linux-gnu -lpython3.8 -lcrypt -lpthread -ldl -lutil -lm -lm -L/usr/lib/x86_64-linux-gnu -ltcl8.6 -ldl -lz -lpthread -lm

Installed in ~/.vim/pack/schlimmchen/start/:

• vim-airline: 49cdcb7
• vim-fugitive: 41960996e0c532069533072b3fd820fafe9ce0b3
• vim-gitgutter: 0f98634b92da9a35580b618c11a6d2adc42d9f90

OS: Ubuntu 20.10
vimrc: ~/.vimrc is empty
Airline configuration: default
Terminal: gnome-terminal, $TERM=xterm-256color, t_Co=256

setup

Navigate the terminal to a git repository with unstaged changes. Open a file with unstages changes. Observe the statusline (make sure updatetime is not too low).

actual behavior

The statusline initializes with a hunk summary (0/0/0) (from vim-gitgutter?) and the branch symbol and name (from vim-fugitive):

updatetime milliseconds pass. The sign column appears (not visible in the screenshot), and the statusline has no hunk summary any more, but the branch is marked as dirty:

The cursor is moved (or any key is pressed). The hunk summary re-appears with the expected values.

expected behavior

updatetime should be small so that the gitgutter signs and the mark indicating a dirty branch are updated fast. But I am confused as to why my statusbar changes again when navigating the file after opening it. I would expect the hunk status to always be present and to be updated alongside the branch-dirty-mark the first time that updatetime milliseconds passed.

vim-figutive

When "uninstalling" vim-fugitive, the hunk summary appears with 0/0/0 values when opening the file and updates when updatetime milliseconds passed. So I guess there is some kind of incompatibility?

[chrisbra]

and what does git status show for that repository in question?

[schlimmchen]

[chrisbra]

my guess is, when vim starts, it doesn't know the status so you get the clean state. Vim will however spin up some async jobs to get a correct status and my guess is you see those updated on the next redraw (e.g. when you press a key).

[schlimmchen]

If vim-gitgutter is installed but vim-fugitive is not, I get the expected hunk summary +1 ~0 -0 right after the first updatetime passed, no need to press a key. There is no branch name and no dirty indicator, of course.

If vim-gitgutter is not installed but vim-fugitive is, I get no hunk summary, of course. The branch name appears immediately after opening the file and the dirty indicator appears only after moving the cursor (or pressing a key).

Reminder: If both are installed, the "default" hunk summary and branch name appear immediately, the dirty indicator appears after updatetime passed, but the correct hunk summary only re-appears after a key press.

Interesting. Can you make something of this?

[chrisbra]

I have never noticed. As I said, my guess is that this is related to the async jobs running.

[get-me-power]

I have never noticed. As I said, my guess is that this is related to the async jobs running.

Also, As far as as asynchronous processing is concerned, I don't think there is anything that can be done on the vim-airline side, as some lag depends on the specs of the machine.