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Ed Santiago 40cd1c0ff5 Man pages: refactor common options: --device
The refactors are starting to get harder to review - sorry.

Here the differences are pretty small, mostly changes to the
"it is a combination" wording and some asteriskization.

The more significant diffs are that there are some Notes that
are pod- or container- or build-specific; I needed to move those
from the middle to the end, then keep them in the source files
themselves. I don't think this affects readability of the
resulting man pages, but your opinion may differ.

Last important thing: I included the /dev/fuse text in the
common option, which means it will now show up in podman-build
(it was not previously there). If this text is not applicable
to podman-build, please LMK ASAP so I can just move it back
to individual source files.

Signed-off-by: Ed Santiago <santiago@redhat.com>
2022-09-06 08:20:32 -06:00
..
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Common Man Page Options

This subdirectory contains option (flag) names and descriptions common to multiple podman man pages. Each file is one option. The filename does not necessarily need to be identical to the option name: for instance, hostname.container.md and hostname.pod.md exist because the --hostname option is sufficiently different between podman-{create,run} and podman-pod-{create,run} to warrant living separately.

How

The files here are included in podman-*.md.in files using the @@option mechanism:

@@option foo           ! will include options/foo.md

The tool that does this is hack/markdown-preprocess. It is a python script because it needs to run on readthedocs.io. From a given .md.in file, this script will create a .md file that can then be read by go-md2man, sphinx, anything that groks markdown. This runs as part of make docs.

Special Substitutions

Some options are almost identical except for 'pod' vs 'container' differences. For those, use <<text for pods|text for containers>>. Order is immaterial: the important thing is the presence of the string "pod" in one half but not the other. The correct string will be chosen based on the filename: if the file contains -pod, such as podman-pod-create, the string with pod (case-insensitive) in it will be chosen.

The string <<subcommand>> will be replaced with the podman subcommand as determined from the filename, e.g., create for podman-create.1.md.in. This allows the shared use of examples in the option file:

    Example: podman <<subcommand>> --foo --bar

As a special case, podman-pod-X becomes just X (the "pod" is removed). This makes the pod-id-file man page more useful.