summaryrefslogtreecommitdiff
path: root/Master/texmf-doc/doc/english/FAQ-en/html/FAQ-empty.html
diff options
context:
space:
mode:
Diffstat (limited to 'Master/texmf-doc/doc/english/FAQ-en/html/FAQ-empty.html')
-rw-r--r--Master/texmf-doc/doc/english/FAQ-en/html/FAQ-empty.html37
1 files changed, 0 insertions, 37 deletions
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
- &lt;empty case&gt;
- \else
- &lt;non-empty case&gt;
- \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&rsquo;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&rsquo;s code also appears in the LaTeX
-<i>memoir</i> class.
-<p/><i>Ifmtarg</i> makes challenging reading; there&rsquo;s also a discussion of the
-issue in number two of the &ldquo;around the bend&rdquo; 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>