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Fix moving panes to workspaces in prefix mode on strict POSIX shells

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The "expr substr" syntax used to return characters from a string is not defined
in the POSIX sh specication. Attempting to use that syntax on a Macbook led to
the bindings for moving panes between windows in prefix mode to fail to be
bound.

This patch addresses this by using a POSIX-compliant replacement for returning a
character from a string by index using the cut command.
This commit is contained in:
Erik Paulson 2021-01-05 22:03:49 -08:00
parent 73d2404cdc
commit d35992ae68
1 changed files with 18 additions and 11 deletions
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29
tilish.tmux
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@ -98,6 +98,13 @@ bind_layout () {
}
# }}}
# A helper for finding the character at a given position in a string in a
# POSIX sh compatible way {{{
charAt () {
echo $1 | cut -c $2
}
# }}}
# Define keybindings {{{
# Define a prefix key.
if [ -n "$prefix" ]
@ -117,25 +124,25 @@ bind_switch "${mod}8" 8
bind_switch "${mod}9" 9
# Move pane to workspace via Alt + Shift + #.
bind_move "${mod}$(expr substr $shiftnum 1 1)" 1
bind_move "${mod}$(expr substr $shiftnum 2 1)" 2
bind_move "${mod}$(expr substr $shiftnum 3 1)" 3
bind_move "${mod}$(expr substr $shiftnum 4 1)" 4
bind_move "${mod}$(expr substr $shiftnum 5 1)" 5
bind_move "${mod}$(expr substr $shiftnum 6 1)" 6
bind_move "${mod}$(expr substr $shiftnum 7 1)" 7
bind_move "${mod}$(expr substr $shiftnum 8 1)" 8
bind_move "${mod}$(expr substr $shiftnum 9 1)" 9
bind_move "${mod}$(charAt $shiftnum 1)" 1
bind_move "${mod}$(charAt $shiftnum 2)" 2
bind_move "${mod}$(charAt $shiftnum 3)" 3
bind_move "${mod}$(charAt $shiftnum 4)" 4
bind_move "${mod}$(charAt $shiftnum 5)" 5
bind_move "${mod}$(charAt $shiftnum 6)" 6
bind_move "${mod}$(charAt $shiftnum 7)" 7
bind_move "${mod}$(charAt $shiftnum 8)" 8
bind_move "${mod}$(charAt $shiftnum 9)" 9
# The mapping of Alt + 0 and Alt + Shift + 0 depends on `base-index`.
# It can either refer to workspace number 0 or workspace number 10.
if [ "$(tmux show-option -gv base-index)" = "1" ]
then
bind_switch "${mod}0" 10
bind_move "${mod}$(expr substr $shiftnum 10 1)" 10
bind_move "${mod}$(charAt $shiftnum 10)" 10
else
bind_switch "${mod}0" 0
bind_move "${mod}$(expr substr $shiftnum 10 1)" 0
bind_move "${mod}$(charAt $shiftnum 10)" 0
fi
# Switch layout with Alt + <mnemonic key>. The mnemonics are `s` and `S` for