Problem

Environment variable is not being set in a weird case

tmuxp details

• Python 2.7.16
• /Users/thamaraiselvam/Documents/repositories/github.com/tmuxp/.venv/bin:/Users/thamaraiselvam/.rvm/gems/ruby-2.6.3/bin:/Users/thamaraiselvam/.rvm/gems/ruby-2.6.3@global/bin:/Users/thamaraiselvam/.rvm/rubies/ruby-2.6.3/bin:/usr/local/opt/helm@2/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/Users/thamaraiselvam/.rvm/gems/ruby-2.6.3/bin:/Users/thamaraiselvam/.rvm/gems/ruby-2.6.3@global/bin:/Users/thamaraiselvam/.rvm/rubies/ruby-2.6.3/bin:/usr/local/opt/helm@2/bin:/Users/thamaraiselvam/.rvm/bin:/Users/thamaraiselvam/development/flutter/bin:/usr/local/Cellar/node/12.10.0/bin/:/Users/thamaraiselvam/go/bin:/usr/local/opt/go/libexec/binP:/usr/local/opt/fzf/bin:/Users/thamaraiselvam/.rvm/bin:/Users/thamaraiselvam/development/flutter/bin:/usr/local/bin:/usr/local/Cellar/node/12.10.0/bin/:/Users/thamaraiselvam/go/bin:/usr/local/opt/go/libexec/binP
• tmux 3.0a
• tmuxp 1.5.4
• tmux path: /usr/local/bin/tmux
• tmuxp path: /usr/local/bin/tmux

output of tmux show-options -g

@battery_bar "#[bg=none]#[fg=colour196]◼#[fg=colour202]◻#[fg=colour208]◻#[fg=colour214]◻#[fg=colour220]◻#[fg=colour226]◻#[fg=colour190]◻#[fg=colour154]◻#[fg=colour118]◻#[fg=colour82]◻#[fg=colour196]"
@battery_bar_length auto
@battery_bar_palette gradient
@battery_bar_symbol_empty ◻
@battery_bar_symbol_full ◼
@battery_hbar "#[fg=colour196]▏"
@battery_hbar_palette gradient
@battery_percentage 9%
@battery_status ↓
@battery_status_charging ↑
@battery_status_discharging ↓
@battery_vbar "#[fg=colour196]▁"
@battery_vbar_palette gradient
@root !
activity-action other
assume-paste-time 1
base-index 1
bell-action any
default-command 
default-shell /bin/zsh
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=#000000,bright
message-style fg=#000000,bg=#ffff00,bright
mouse on
prefix C-a
prefix2 None
renumber-windows on
repeat-time 600
set-titles on
set-titles-string "#h ❐ #S ● #I #W"
silence-action other
status on
status-bg #080808
status-fg #8a8a8a
status-format[0] "#[align=left range=left #{status-left-style}]#{T;=/#{status-left-length}:status-left}#[norange default]#[list=on align=#{status-justify}]#[list=left-marker]<#[list=right-marker]>#[list=on]#{W:#[range=window|#{window_index} #{window-status-style}#{?#{&&:#{window_last_flag},#{!=:#{window-status-last-style},default}}, #{window-status-last-style},}#{?#{&&:#{window_bell_flag},#{!=:#{window-status-bell-style},default}}, #{window-status-bell-style},#{?#{&&:#{||:#{window_activity_flag},#{window_silence_flag}},#{!=:#{window-status-activity-style},default}}, #{window-status-activity-style},}}]#{T:window-status-format}#[norange default]#{?window_end_flag,,#{window-status-separator}},#[range=window|#{window_index} list=focus #{?#{!=:#{window-status-current-style},default},#{window-status-current-style},#{window-status-style}}#{?#{&&:#{window_last_flag},#{!=:#{window-status-last-style},default}}, #{window-status-last-style},}#{?#{&&:#{window_bell_flag},#{!=:#{window-status-bell-style},default}}, #{window-status-bell-style},#{?#{&&:#{||:#{window_activity_flag},#{window_silence_flag}},#{!=:#{window-status-activity-style},default}}, #{window-status-activity-style},}}]#{T:window-status-current-format}#[norange list=on default]#{?window_end_flag,,#{window-status-separator}}}#[nolist align=right range=right #{status-right-style}]#{T;=/#{status-right-length}:status-right}#[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=#000000,bg=#ffff00,bold] ❐ #S #[fg=#ffff00,bg=default,none] "
status-left-length 1000
status-left-style fg=#8a8a8a,bg=#080808
status-position bottom
status-right "#(cut -c3- ~/.tmux.conf | sh -s _battery)#[fg=#080808,bg=default,none]#[fg=#8a8a8a,bg=#080808,none]#[fg=#e4e4e4]#[bg=none]#[none]#{?session_many_attached,👓,}#[fg=#e4e4e4]#[bg=none]#[none]#{?client_prefix,⌨,} #{@battery_status} #{@battery_bar} #{@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- ~/.tmux.conf | sh -s _username #{pane_tty} false #D) #[fg=#e4e4e4,bg=#d70000,none]#[fg=#000000,bg=#e4e4e4,bold] #(cut -c3- ~/.tmux.conf | sh -s _hostname #{pane_tty} false #D) "
status-right-length 1000
status-right-style fg=#8a8a8a,bg=#080808
status-style fg=#8a8a8a,bg=#080808
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 " "

Environment

Darwin 19.2.0 Darwin Kernel Version 19.2.0: Sat Nov 9 03:47:04 PST 2019; root:xnu-6153.61.1~20/RELEASE_X86_64 x86_64

Step 4: Describe the problem:

tmuxp is not setting environment variable which starts with -th

Steps to reproduce:

1. create a session yaml file as following

session_name: test
windows:
- window_name: default
  panes: []
environment:
  ONE: th
  TWO: -th
  THREE: -th-

2. tmuxp load session.yaml
3. check following environments

 echo $ONE
 echo $TWO
 echo $THREE

only ONE will be there

Observed Results:

• No error or warning when run with --log_level

Expected Results:

• Should have set environment called $TWO and $THREE