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On 24/10/2025 00:44, Denis Ovsienko wrote:
> On Mon, 20 Oct 2025 15:30:01 -0700
> Guy Harris <[email protected]> wrote:
>
>> So, not surprisingly, no consistency, given that commands come from
>> various projects.
>
> Here is a couple more examples:
>
> Linux iproute2 uses mostly uppercase for usage message, and the man
> pages, the man pages use mostly uppercase and a mix of italic and
> <arg>, the HTML/PDF command reference looks no longer maintained, but
> its version from 1999 uses just uppercase where it certainly could have
> used italic.
>
> Perl uses italic for its command-line options in the man pages and the
> online manual, and plain lowercase in the usage message. However, the
> language-specific man pages use plain uppercase in all formats, for
> example, perlfunc(1) says:
>
> chdir EXPR
> chdir FILEHANDLE
> chdir DIRHANDLE
> chdir
Some more search in many Linux man pages about angle-bracket convention:
$ man -K '<.*>'|grep '<.*>'
Shows:
1) Very few <argument> use.
2) Some '<' '>' pairs not used as placeholder:
a) To show symbols as in: <CR>, <LF>, <CR><LF>.
b) literally as: #include <xxx.h>, <[email protected]>.
Thus ambiguity.
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