External commands
%
resolves to the current filename. !
calls an external function. Together, %!
executes a command over the file, and replaces the current buffer with the output.You can generate derived JSON from an existing file with
jq
, which I sometimes use to generate and manipulate test vectors::w !jq '.key-to-filter-by' > filtered.json
You can easily pass Markdown (or any other text format) files straight through
pandoc
. This is useful for exporting documentation for sharing with non-engineers.:w !pandoc -o FILENAME.pdf
Processing can be achieved by calling
%! !external_fn
to replace buffer contents in-place.In this example, we pipe a JSON file through
jq
to prettify::%: !jq '.'
In this example, we convert the current file from Markdown to HTML using
pandoc
::%: !pandoc -f markdown -t html
Last modified 1yr ago