accessing vars in .chezmoitemplates/

[laur89]

docs on .chezmoitemplates states:

By default, such templates will be executed with nil data. If you want to access template variables (e.g. .chezmoi.os) in the template you must pass the data explicitly.

Yet later in same page, an example ~/.local/share/chezmoi/.chezmoitemplates/alacritty is able to access variables without them explicitly being passed to it.

Why this discrepancy or am I misreading it?

[halostatue]

You're misreading it.

Data is configured in chezmoi config:

# ~/.config/chezmoi/chezmoi.toml
[data.alacritty.big]
    fontsize = 18
    font = "DejaVu Serif"
[data.alacritty.small]
    fontsize = 12
    font = "DejaVu Sans Mono"

The template expects its parameters to be passed with .fontsize and .font configuration

# ~/.local/share/chezmoi/.chezmoitemplates/alacritty
some: config
fontsize: {{ .fontsize }}
font: {{ .font }}
more: config

Then the template is used {{- template "alacritty" .alacritty.small -}}.

This results in the selection of .alacritty.small as the passed parameters, which have the .fontsize and .font keys expected.