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diff --git a/Master/texmf-doc/doc/english/FAQ-en/html/FAQ-empty.html b/Master/texmf-doc/doc/english/FAQ-en/html/FAQ-empty.html deleted file mode 100644 index 0d37b2b6658..00000000000 --- a/Master/texmf-doc/doc/english/FAQ-en/html/FAQ-empty.html +++ /dev/null @@ -1,37 +0,0 @@ -<head> -<title>UK TeX FAQ -- question label empty</title> -</head><body> -<h3>Detecting that something is empty</h3> -<p/>Suppose you need to know that the argument of your command is empty: -that is, to distinguish between <code>\</code><code>cmd{}</code> -and <code>\</code><code>cmd{blah}</code>. This is pretty simple: -<blockquote> -<pre> -\def\cmd#1{% - \def\tempa{}% - \def\tempb{#1}% - \ifx\tempa\tempb - <empty case> - \else - <non-empty case> - \fi -} -</pre> -</blockquote><p> -The case where you want to ignore an argument that consists of nothing -but spaces, rather than something completely empty, is more tricky. -It’s solved in the code fragment <i>ifmtarg</i>, which defines -commands <code>\</code><code>@ifmtarg</code> and <code>\</code><code>@ifnotmtarg</code>, which examine their -first argument, and select (in opposite directions) their second or -third argument. The package’s code also appears in the LaTeX -<i>memoir</i> class. -<p/><i>Ifmtarg</i> makes challenging reading; there’s also a discussion of the -issue in number two of the “around the bend” articles by the late -lamented Mike Downes. -<dl> -<dt><tt><i>Around the bend series</i></tt><dd><a href="ftp://cam.ctan.org/tex-archive/info/aro-bend.zip">info/aro-bend</a> (<a href="ftp://cam.ctan.org/tex-archive/info/aro-bend.tar.gz">gzipped tar</a>, <a href="http://www.tex.ac.uk/tex-archive/info/aro-bend/">browse</a>) -<dt><tt><i>ifmtarg.sty</i></tt><dd><a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/misc/ifmtarg.sty">macros/latex/contrib/misc/ifmtarg.sty</a> -<dt><tt><i>memoir.cls</i></tt><dd><a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/memoir.zip">macros/latex/contrib/memoir</a> (<a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/memoir.tar.gz">gzipped tar</a>, <a href="http://www.tex.ac.uk/tex-archive/macros/latex/contrib/memoir/">browse</a>) -</dl> -<p/><p>This question on the Web: <a href="http://www.tex.ac.uk/cgi-bin/texfaq2html?label=empty">http://www.tex.ac.uk/cgi-bin/texfaq2html?label=empty</a> -</body> |