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docs: update format-tab-title examples

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nudge folks towards making their custom formatting aware of the
new tab title stuff
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Wez Furlong 2023-04-05 08:18:50 -07:00
parent 96f1585b10
commit 3910291d4d
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1 changed files with 39 additions and 5 deletions
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44
docs/config/lua/window-events/format-tab-title.md
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@ -21,16 +21,32 @@ but it demonstrates that it is possible to format more than just the text
shown in the tab.
```lua
-- This function returns the suggested title for a tab.
-- It prefers the title that was set via `tab:set_title()`
-- or `wezterm cli set-tab-title`, but falls back to the
-- title of the active pane in that tab.
function tab_title(tab_info)
local title = tab_info.tab_title
-- if the tab title is explicitly set, take that
if title and #title > 0 then
return title
end
-- Otherwise, use the title from the active pane
-- in that tab
return tab.active_pane.title
end
wezterm.on(
'format-tab-title',
function(tab, tabs, panes, config, hover, max_width)
local title = tab_title(tab)
if tab.is_active then
return {
{ Background = { Color = 'blue' } },
{ Text = ' ' .. tab.active_pane.title .. ' ' },
{ Text = ' ' .. title .. ' ' },
}
end
return tab.active_pane.title
return title
end
)
```
@ -70,10 +86,26 @@ A more elaborate example:
local wezterm = require 'wezterm'
-- The filled in variant of the < symbol
local SOLID_LEFT_ARROW = utf8.char(0xe0b2)
local SOLID_LEFT_ARROW = wezterm.nerdfonts.pl_right_hard_divider
-- The filled in variant of the > symbol
local SOLID_RIGHT_ARROW = utf8.char(0xe0b0)
local SOLID_RIGHT_ARROW = wezterm.nerdfonts.pl_left_hard_divider
-- This function returns the suggested title for a tab.
-- It prefers the title that was set via `tab:set_title()`
-- or `wezterm cli set-tab-title`, but falls back to the
-- title of the active pane in that tab.
function tab_title(tab_info)
local title = tab_info.tab_title
-- if the tab title is explicitly set, take that
if title and #title > 0 then
return title
end
-- Otherwise, use the title from the active pane
-- in that tab
return tab.active_pane.title
end
wezterm.on(
'format-tab-title',
@ -92,9 +124,11 @@ wezterm.on(
local edge_foreground = background
local title = tab_title(tab)
-- ensure that the titles fit in the available space,
-- and that we have room for the edges.
local title = wezterm.truncate_right(tab.active_pane.title, max_width - 2)
title = wezterm.truncate_right(title, max_width - 2)
return {
{ Background = { Color = edge_background } },