main-pane-height of incorrect size

[Dmitry-N-Medvedev]

Are you using the latest version of tmuxp? Check tmuxp -V against
https://pypi.org/project/tmuxp/. If it's not the latest, consider updating, e.g.
pip install --user tmuxp.

tmuxp 1.27.0, libtmux 0.21.0

Step 1: Provide a summary of your problem

for some reason, on version 1.27.0 I have to specify the main-pane-height in percentage for it to be of the size close to what I want. If I omit the percentage sign the size of the mane pane will be too small.

Step 2: Provide tmuxp details

• Include output of tmuxp debug-info
• Include any other pertinant system info not captured

Step 3: Describe the problem:

session_name: dev 
windows:
  - window_name: dev 
    focus: true
    layout: main-horizontal
    options:
      main-pane-height: 55%
    panes:
      - shell_command:
        -
      - shell_command:
        -
      - shell_command:
        -

[dodger-one]

Same problem here.
@Dmitry-N-Medvedev, your post had help me to workaround the problem because I was using "local" pane height and I got everything "broken".
I have uploaded this screenshot because since now I thought it was a problem with archlinux, as it worked fine on ubuntu.
Thanks.

[jianglibo]

I got the main-layout only one line height.

the system information:
tmuxp 1.34.0, libtmux 0.25.0

debug-info:
$ tmuxp debug-info
-------------------------
environment:
        dist: Linux-5.15.0-1053-azure-x86_64-with-glibc2.29
        arch: x86_64
        uname: Linux; vm71427cb26; 5.15.0-1053-azure
        version: #61~20.04.1-Ubuntu SMP Tue Nov 21 17:50:57 UTC 2023
-------------------------
python version: 3.8.10 (default, Nov 22 2023, 10:22:35)  [GCC 9.4.0]
system PATH: /home/appuser00000015/.local/bin:/home/appuser00000015/.jbang/bin:/home/appuser00000015/.local/bin:/home/appuser00000015/.jbang/bin:/home/appuser00000015/.asdf/shims:/home/appuser00000015/.asdf/bin:/home/appuser00000015/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
tmux version: 3.3
libtmux version: 0.25.0
tmuxp version: 1.34.0
tmux path: /home/appuser00000015/.local/bin/tmux
tmuxp path: /home/appuser00000015/.local/lib/python3.8/site-packages/tmuxp
shell: /bin/bash
-------------------------
tmux sessions:
        rollup-dev: 3 windows (created Mon Jan  1 05:57:55 2024)



tmux windows:
        1: dev-window* (3 panes) [166x39] [layout 0fe6,166x39,0,0[166x1,0,0,1,166x37,0,2{82x37,0,2,2,83x37,83,2,3}]] @1 (active)
        2: live-server#- (1 panes) [800x600] [layout 87e1,800x600,0,0,4] @2
        3: misc# (1 panes) [800x600] [layout 87e2,800x600,0,0,5] @3



tmux panes:
        1: [166x1] [history 0/5000, 19232 bytes] %1
        2: [82x37] [history 182/5000, 88055 bytes] %2
        3: [83x37] [history 0/5000, 4726 bytes] %3 (active)



tmux global options:
        @uptime_d 3
        @uptime_dy 3
        @uptime_h 22
        @uptime_m 44
        @uptime_s 49
        @uptime_y 0
        activity-action other
        assume-paste-time 1
        base-index 1
        bell-action any
        default-command ''
        default-shell /bin/bash
        default-size 80x24
        destroy-unattached off
        detach-on-destroy on
        display-panes-active-colour #00afff
        display-panes-colour #00afff
        display-panes-time 800
        display-time 1000
        history-limit 5000
        key-table root
        lock-after-time 0
        lock-command "lock -np"
        message-command-style "fg=#ffff00,bg=#080808,bold"
        message-style "fg=#080808,bg=#ffff00,bold"
        mouse off
        prefix C-b
        prefix2 C-a
        renumber-windows on
        repeat-time 600
        set-titles on
        set-titles-string "#h ❐ #S ● #I #W"
        silence-action other
        status on
        status-bg default
        status-fg default
        status-format[0] "#[align=left range=left #{E:status-left-style}]#[push-default]#{T;=/#{status-left-length}:status-left}#[pop-default]#[norange default]#[list=on align=#{status-justify}]#[list=left-marker]<#[list=right-marker]>#[list=on]#{W:#[range=window|#{window_index} #{E:window-status-style}#{?#{&&:#{window_last_flag},#{!=:#{E:window-status-last-style},default}}, #{E:window-status-last-style},}#{?#{&&:#{window_bell_flag},#{!=:#{E:window-status-bell-style},default}}, #{E:window-status-bell-style},#{?#{&&:#{||:#{window_activity_flag},#{window_silence_flag}},#{!=:#{E:window-status-activity-style},default}}, #{E:window-status-activity-style},}}]#[push-default]#{T:window-status-format}#[pop-default]#[norange default]#{?window_end_flag,,#{window-status-separator}},#[range=window|#{window_index} list=focus #{?#{!=:#{E:window-status-current-style},default},#{E:window-status-current-style},#{E:window-status-style}}#{?#{&&:#{window_last_flag},#{!=:#{E:window-status-last-style},default}}, #{E:window-status-last-style},}#{?#{&&:#{window_bell_flag},#{!=:#{E:window-status-bell-style},default}}, #{E:window-status-bell-style},#{?#{&&:#{||:#{window_activity_flag},#{window_silence_flag}},#{!=:#{E:window-status-activity-style},default}}, #{E:window-status-activity-style},}}]#[push-default]#{T:window-status-current-format}#[pop-default]#[norange list=on default]#{?window_end_flag,,#{window-status-separator}}}#[nolist align=right range=right #{E:status-right-style}]#[push-default]#{T;=/#{status-right-length}:status-right}#[pop-default]#[norange default]"
        status-format[1] "#[align=centre]#{P:#{?pane_active,#[reverse],}#{pane_index}[#{pane_width}x#{pane_height}]#[default] }"
        status-interval 10
        status-justify left
        status-keys emacs
        status-left "#[fg=#080808,bg=#ffff00,bold] ❐ #S #[fg=#ffff00,bg=#ff00af,none]#[fg=#e4e4e4,bg=#ff00af,none] ↑#{?@uptime_y, #{@uptime_y}y,}#{?@uptime_dy, #{@uptime_dy}d,}#{?@uptime_h, #{@uptime_h}h,}#{?@uptime_m, #{@uptime_m}m,} #[fg=#ff00af,bg=#080808,none] "
        status-left-length 1000
        status-left-style "fg=#8a8a8a,bg=#080808,none"
        status-position bottom
        status-right "#[fg=#080808,bg=#080808,none]#[fg=#8a8a8a,bg=#080808,none] #[fg=none]#[bg=none]#[none]#{?client_prefix,⌨ ,  }#[fg=none]#[bg=none]#[none]#{?mouse,↗ ,  }#[fg=none]#[bg=none]#[none]#{?session_many_attached,⚇ ,}#[fg=none]#[bg=none]#[none]#{?pane_synchronized,⚏ ,}#{?battery_status,#{battery_status},}#{?battery_bar, #{battery_bar},}#{?battery_percentage, #{battery_percentage},} #[fg=#8a8a8a,bg=#080808,none]| %R #[fg=#8a8a8a,bg=#080808,none]| %d %b #[fg=#d70000,bg=#080808,none]#[fg=#e4e4e4,bg=#d70000,none] #(cut -c3- '/home/appuser00000015/.config/tmux/tmux.conf' | sh -s _username '#{pane_pid}' '#{b:pane_tty}' false '#D')#[fg=none]#[bg=none]#[bold,blink]#{?#{==:#(cut -c3- '/home/appuser00000015/.config/tmux/tmux.conf' | sh -s _username '#{pane_pid}' '#{b:pane_tty}' '#D'),root},!,}#[default]#[fg=#e4e4e4,bg=#d70000,none] #[fg=#e4e4e4,bg=#d70000,none]#[fg=#080808,bg=#e4e4e4,bold] #(cut -c3- '/home/appuser00000015/.config/tmux/tmux.conf' | sh -s _hostname '#{pane_pid}' '#{b:pane_tty}' false false '#h' '#D') "
        status-right-length 1000
        status-right-style "fg=#8a8a8a,bg=#080808,none"
        status-style "fg=#8a8a8a,bg=#080808,none"
        update-environment[0] DISPLAY
        update-environment[1] KRB5CCNAME
        update-environment[2] SSH_ASKPASS
        update-environment[3] SSH_AUTH_SOCK
        update-environment[4] SSH_AGENT_PID
        update-environment[5] SSH_CONNECTION
        update-environment[6] WINDOWID
        update-environment[7] XAUTHORITY
        visual-activity off
        visual-bell off
        visual-silence off
        word-separators "!\"#$%&'()*+,-./:;<=>?@[\\]^`{|}~"



tmux window options:
        cursor-colour none
        cursor-style default
        aggressive-resize off
        allow-passthrough off
        allow-rename off
        alternate-screen on
        automatic-rename on
        automatic-rename-format "#{?pane_in_mode,[tmux],#{pane_current_command}}#{?pane_dead,[dead],}"
        clock-mode-colour #00afff
        clock-mode-style 24
        copy-mode-match-style bg=cyan,fg=black
        copy-mode-current-match-style bg=magenta,fg=black
        copy-mode-mark-style bg=red,fg=black
        fill-character ''
        main-pane-height 24
        main-pane-width 80
        mode-keys emacs
        mode-style "fg=#080808,bg=#ffff00,bold"
        monitor-activity on
        monitor-bell on
        monitor-silence 0
        other-pane-height 0
        other-pane-width 0
        pane-active-border-style "fg=#{?pane_in_mode,#ffff00,#{?synchronize-panes,#d70000,#00afff}},bg=default"
        pane-base-index 1
        pane-border-format "#{?pane_active,#[reverse],}#{pane_index}#[default] \"#{pane_title}\""
        pane-border-indicators colour
        pane-border-lines single
        pane-border-status off
        pane-border-style "fg=#303030,bg=default"
        pane-colours
        popup-style default
        popup-border-style default
        popup-border-lines single
        remain-on-exit off
        remain-on-exit-format "Pane is dead (#{?#{!=:#{pane_dead_status},},status #{pane_dead_status},}#{?#{!=:#{pane_dead_signal},},signal #{pane_dead_signal},}, #{t:pane_dead_time})"
        scroll-on-clear on
        synchronize-panes off
        window-active-style default
        window-size latest
        window-style fg=default,bg=default
        window-status-activity-style fg=default,bg=default,underscore
        window-status-bell-style "fg=#ffff00,bg=default,blink,bold"
        window-status-current-format "#[fg=#080808,bg=#00afff,none]#[fg=#080808,bg=#00afff,bold] #I #W#{?#{||:#{window_bell_flag},#{window_zoomed_flag}}, ,}#{?window_bell_flag,!,}#{?window_zoomed_flag,Z,} #[fg=#00afff,bg=#080808]"
        window-status-current-style "fg=#080808,bg=#00afff,bold"
        window-status-format "#[fg=#080808,bg=#080808,none]#{?window_last_flag,#[bg=#303030],}#{?window_activity_flag,,}#{?window_bell_flag,,}#[fg=#8a8a8a,bg=#080808,none]#{?window_last_flag,#[fg=#00afff],}#{?window_last_flag,#[bg=#303030],}#{?window_activity_flag,,}#{?window_activity_flag,,}#{?window_bell_flag,#[fg=#ffff00],}#{?window_bell_flag,,}#{?window_last_flag,#{?window_activity_flag,#{?window_bell_flag, , },#{?window_bell_flag, , }},#{?window_activity_flag,#{?window_bell_flag,,},#{?window_bell_flag,,}}}#{?window_last_flag,#[none],}#{?window_last_flag,#[none],}#{?window_activity_flag,#[none],}#{?window_activity_flag,#[underscore],}#{?window_bell_flag,#[blink],}#{?window_bell_flag,#[bold],}#I #W#{?#{||:#{window_bell_flag},#{window_zoomed_flag}}, ,}#{?window_bell_flag,!,}#{?window_zoomed_flag,Z,}#[none]#{?window_last_flag,#{?window_activity_flag,#{?window_bell_flag, , },#{?window_bell_flag, , }},#{?window_activity_flag,#{?window_bell_flag,,},#{?window_bell_flag,,}}}#[fg=#080808,bg=#080808]#{?window_last_flag,#[fg=#303030],}#{?window_activity_flag,,}#{?window_bell_flag,,}"
        window-status-last-style "fg=#00afff,bg=#303030,none"
        window-status-separator " "
        window-status-style "fg=#8a8a8a,bg=#080808,none"
        wrap-search on
        xterm-keys on

live demo(xterm in browser).

the sesson.yaml

session_name: rollup-dev
windows:
  - window_name: dev-window
    # start_directory: ./test-rollup
    layout: main-horizontal
    shell_command_before:
      - cd ./test-rollup # run as a first command in all panes
    options:
      main-pane-height: 30
    panes:
      - shell_command:
        - nvim
      - shell_command:
        - yarn install
        - yarn run dev
      - shell_command:
        - ./__run_test.sh
  - window_name: live-server
    # start_directory: ./test-rollup
    panes:
      - shell_command:
        - cd ./test-rollup
        - ./__live-server.sh
  - window_name: misc
    panes:
      - pane