SYNOPSISsgmlpre [options] ...
DESCRIPTIONThis manual page documents briefly the sgmlpre commands. This manual page was written for the Debian GNU/Linux distribution because the original program does not have a manual page for sgmlpre.
sgmlpre is a program that handle SGML conditionalization for SGML-tools
It is used by other programs in sgml-tools (v1), and usually normal user does not need to use this program directly by himself.
Following is quoted from the header in the source code.
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sgmlpre -- handle SGML conditionalization for SGML-tools by Eric S. Raymond <[email protected]>, 3 Nov 1997
Filter SGML according to conditionalizing markup. Argument/value pairs from the command line are matched against the attributes of <#if> and <#unless> tags. Spans between <#if>/</#if> are passed through unaltered if there is no attribute mismatch; spans between <#unless></#unless> are passed if there is at least one attribute mismatch. An attribute mismatch happens if an attribute occurs in both the command-line arguments and the tag, but the values do not match. Value matching is by string equality, except that "|" is interpreted as an alternation character. Even if a span is not passed through, its newlines are (this to avoid messing up the line numbers in error messages).
This lexer requires flex. Limitations; attribute names may only be 256 chars long, values may be only 16384 (YY_BUF_SIZE) characters long. Doesn't do checking that only </if> matches <if> and </unless> matches <unless> (that would need a stack and introduce another limit).
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