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bug#25461: [Patch]: Missing doc strings for "," and ",@".

From: npostavs
Subject: bug#25461: [Patch]: Missing doc strings for "," and ",@".
Date: Wed, 18 Jan 2017 19:16:34 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux)

Alan Mackenzie <address@hidden> writes:

> I'll just point out one thing I'm proposing changing.  That is, to use
> princ rather than prin1 to print the name of the function.  This causes,
> for example, backtick to be printed as
>     `
> rather than the
>     \`
> we get at the moment.  This might cause problems for function names
> which include backslashes or unprintable characters such as \n.

Perhaps only do this for symbols which have `reader-macro' set in their

> +;; Give `,' and `,@' documentation strings which can be examined by C-h f.
> +(put '\, 'function-documentation
> +     "`,' signals that the next form should be evaluated and inserted.

This conflates the reader macro with its particular use by the backquote
macro.  I think it's better to explain only the reader macro here, and
link to ` and pcase for more details.

> +It can occur only in `\\=`' constructs.

This isn't true.

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