Error (harmless) when creating new panes.

[amosbird]

The behavior (blinking) is shown in https://ptpb.pw/YSSL.webm

Error msg is

[gpakosz]

Yes this is a minor tmux annoyance imho. When a command is not ready, tmux displays a <'cmd' not ready> placeholder string.

This is going to be mitigated in tmux 2.4.

This is the first time I see it happening to systematically though. What's your value for status-interval?

[amosbird]

status-interval = 1
Well, I'm using tmux 2.4

[gpakosz]

Does setting a higher status-interval mitigate the problem?

[amosbird]

no, it has no effect on this issue.

[gpakosz]

I kinda expected this answer.

In fact, can you please try the gh-47 branch I just pushed?

[amosbird]

I did. It doesn't work though.

[gpakosz]

What gh-47 does is removing leftover debug code that slowdowns the _username() function hence increasing the chances tmux reporting the command is not ready.

I'll try to find a way to factor out the ps calls inside _username() in hope I can optimize it.

In the meantime, can you please tell me more about your setup?

• OS
• shell
• ~/.ssh/config peculiarities (like are you using multiplexing, etc...)
• whatever you might find relevant

[amosbird]

CentOS 6.8
Fish 2.4

No fancy stuff in other configurations.

[gpakosz]

And I forgot, what additions/customizations did you make to my conf?

[amosbird]

modified   .tmux.conf
@@ -146,6 +146,14 @@ if '[ -f ~/.tmux.conf.local ]' 'source ~/.tmux.conf.local'
 
 run 'cut -c3- ~/.tmux.conf | sh -s _apply_configuration'
 
+if '[ -f ~/.tmux.conf.local ]' 'source ~/.tmux.conf.local'
+
+set -g @plugin 'tmux-plugins/tpm'
+set -g @plugin 'tmux-plugins/tmux-resurrect'
+set -g @plugin 'tmux-plugins/tmux-continuum'
+set -g @continuum-restore 'on'
+
+run '~/.tmux/plugins/tpm/tpm'
 
 # ►_◄
 #

and here is my local conf

[gpakosz]

First remark: I believe you can put the tpm bits at the end of your ~/.tmux.conf.local copy. This way it's easier to keep up with upstream when I push changes to .tmux.conf

Then, you do

set -g status-interval 1     # redraw status line every 10 seconds

This refreshes status line every 1 second, not 10.

While harmless,

set -g default-command /usr/bin/fish
set -g default-shell /usr/bin/fish

look superfluous to me.

Anyways, I'll try to reproduce your problem in a Virtualbox VM. In the meantime, can you please give me the output of

$ tmux show -g status-left
$ tmux show -g status-right

I'm curious to see how tpm plugins changed it if they changed it.

[amosbird]

let me quote what nicm (tmux maintainer) suggest,

20:36:42        nicm | it isn't an error, you have some huge big command in status-left or status-right and tmux is telling you it hasn't finished running yet so there is no output
20:37:17        nicm | you can either run master, where we use the command before substitution so lookup the output so it probably won't happen
20:37:43        nicm | or you can put your commands in a script so the actual command doesn't change when you switch pane

[amosbird]

❯ tmux show -g status-left
status-left "#[fg=#000000,bg=#ffff00,bold] ❐ #S #[fg=#ffff00,bg=#5f5fff,none]#[fg=#e4e4e4,bg=#5f5fff,none] ↑#{?@uptime_d, #{@uptime_d}d,}#{?@uptime_h, #{@uptime_h}h,}#{?@uptime_m, #{@uptime_m}m,} #[fg=#5f5fff,bg=default,none] "

/
❯ tmux show -g status-right
status-right "#(/home/amos/.tmux/plugins/tmux-continuum/scripts/continuum_save.sh)#(cut -c3- ~/.tmux.conf | sh -s _uptime)#(cut -c3- ~/.tmux.conf | sh -s _battery)#[fg=#080808,bg=default,none]#[fg=#8a8a8a,bg=#080808,bold]#{?pane_synchronized, SYNC,} #[fg=#8a8a8a,bg=#080808,bold]| #[fg=none]#[bg=none]#[none]#{?client_prefix,⌨,}#[fg=none]#[bg=none]#[none]#{?session_many_attached,👓,}#{?@battery_status, #{@battery_status},}#{?@battery_bar, #{@battery_bar},}#{?@battery_percentage, #{@battery_percentage},} #[fg=#8a8a8a,bg=#080808,bold]| %R #[fg=#8a8a8a,bg=#080808,bold]| %d %b #[fg=#d70000,bg=#080808,none]#[fg=#e4e4e4,bg=#d70000,none] #(cut -c3- ~/.tmux.conf | sh -s _username #{pane_tty} false #D)#[fg=none]#[bg=none]#[bold,blink]#(cut -c3- ~/.tmux.conf | sh -s _root #{pane_tty} #D)#[default]#[fg=#e4e4e4,bg=#d70000,none] #[fg=#e4e4e4,bg=#d70000,none]#[fg=#000000,bg=#e4e4e4,none] #(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} false #D) "

[gpakosz]

I already discussed this annoyance with him. And upcoming tmux 2.4 should mitigate it. This has been applied in commit tmux/tmux@3cf19d6

[amosbird]

@gpakosz ah, after upgrading to the newest commit, this issue is gone. Thanks!

[gpakosz]

Good to know!

I'll merge gh-47 into master nonetheless. Happy tmuxing!