diogo/yap-6.3
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add user_flags/s prolog_flag

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Vitor Santos Costa
2010-02-28 00:42:47 +00:00
parent 495529e69e
commit ec30e08f69
4 changed files with 112 additions and 66 deletions
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5
docs/yap.tex
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@@ -7941,6 +7941,11 @@ prompts from the system were redirected to the stream
automatically redirects the @code{user_error} alias to the original
@code{stderr}.
@item user_flags
@findex user_flags (yap_flag/2 option)
@*
Define the behaviour of @code{set_prolog_flag/2} if the flag is not known. Values are @code{silent}, @code{warning} and @code{error}. The first two create the flag on-the-fly, with @code{warning} printing a message. The value @code{error} is consistent with ISO: it raises an existence error and does not create the flag. See also @code{create_prolog_flag/3}. The default is@code{error}, and developers are encouraged to use @code{create_prolog_flag/3} to create flags for their library.
@item user_input
@findex user_input (yap_flag/2 option)
@*