action
suppress
suppress
is equivalent to
put #suppress "%zhc"
In the format string %zhc
,
z
is a format modifier that turns off all translate rules,
h
is a format modifier that turns off all line-breaking rules, and
c
after the %
is the parse continuation operator.
The following sample code demonstrates the use of suppress
in a simple SGML program. The program prints
all of the titles in a document whose doctype is doc
.
process do sgml-parse document scan #main-input output "%c" done element "doc" suppress element "title" put #main-output "%c%n" element #implied output "%c"
If there are subelements in title
, they will be processed by the element #implied
rule.
output "%c"
is used instead of suppress
to process the content of these subelements. This
ensures that the content of the subelement is sent to the same destination as the content of the parent element.
If the subelement is within a title
, its content will be sent to #main-output
in its proper
place within the title. Otherwise, it will be sent to #suppress
.