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; Improve documentation of function-type display

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* etc/NEWS: Document 'help-display-function-type'.

* doc/lispref/functions.texi (Declare Form):
* doc/lispref/objects.texi (Type Specifiers):
* doc/emacs/help.texi (Name Help): Better indexing of function
types.  (Bug#65288)
This commit is contained in:
Eli Zaretskii 2025-01-07 17:20:22 +02:00
parent 1c49edc408
commit ee1034422b
4 changed files with 10 additions and 3 deletions
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doc/lispref/functions.texi
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@ -2726,6 +2726,7 @@ function. This allows function-level control of the safety level used
for the code emitted for the function (@pxref{Native-Compilation
Variables}).
@cindex function type declaration
@item (ftype @var{type} &optional @var{function})
Declare @var{type} to be the type of this function. This is used for
documentation by @code{describe-function}. Also it can be used by the

1
doc/lispref/objects.texi
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@ -1545,6 +1545,7 @@ The @code{not} type specifier defines any type except the specified one.
The @code{member} type specifier allows to specify a type that includes
only the explicitly listed values.
@cindex declared type of a function
@item (function (@var{arg-1-type} @dots{} @var{arg-n-type}) @var{return-type})
The @code{function} type specifier is used to describe the argument
types and the return type of a function. Argument types can be interleaved