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doc: document the use of macros in %error

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Document the use of macros in %error and %warning, valid since 2.03.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
H. Peter Anvin 2008-09-10 23:34:39 -07:00
parent 1dc23a1b39
commit 233c4945b1
1 changed files with 8 additions and 1 deletions
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doc/nasmdoc.src
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@ -3421,7 +3421,14 @@ Similarly, \c{%warning} issues a warning, but allows assembly to continue:
\c %endif
It is optional for the message string after \c{%error} or \c{%warning}
to be quoted.
to be quoted. If it is \e{not}, then single-line macros are expanded
in it, which can be used to display more information to the user. For
example:
\c %if foo > 64
\c %assign foo_over foo-64
\c %error foo is foo_over bytes too large
\c %endif
\H{otherpreproc} \i{Other Preprocessor Directives}