4
***********************************************************************
5
FUNNELWEB MANUAL WEB PAGE
6
=========================
7
Copyright (c) Ross N. Williams 1992,1999. All rights reserved.
9
Permission is granted to redistribute and use this manual in
10
any medium, with or without modification, provided that all
11
notices (including, without limitation, the copyright
12
notice, this permission notice, any record of modification,
13
and all legal notices) are preserved on all copies, that all
14
modifications are clearly marked, and that modified versions
15
are not represented as the original version unless all the
16
modifications since the manual's original release by Ross N.
17
Williams (www.ross.net) consist of translations or other
18
transformations that alter only the manual's form, not its
19
content. THIS MANUAL IS PROVIDED "AS IS" AND WITHOUT ANY
20
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
21
LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND
22
FITNESS FOR A PARTICULAR PURPOSE. TO THE EXTENT PERMITTED BY
23
LAW THERE IS ABSOLUTELY NO WARRANTY.
25
***********************************************************************
29
<TITLE>3.9 Suppressing End of Line Markers</TITLE>
30
<STYLE TYPE="text/css"> <!-- A {text-decoration: none} // --> </STYLE>
32
<BODY BACKGROUND="binary/background.gif"
41
<TD WIDTH="130" VALIGN="top">
42
<IMG SRC="binary/d_clear.gif" ALT="" WIDTH="130" HEIGHT="1"><BR>
47
<A HREF="http://www.ross.net/"
49
onClick="window.open('','rosshome','location,status,menubar,scrollbars,resizable',false).focus(); return true;"
51
<IMG SRC="binary/rossnet_logo.gif"
52
WIDTH="64" HEIGHT="32"
53
BORDER="0" ALT="RossNet"
54
HSPACE="0" VSPACE="1"></A><BR>
57
<A HREF="../index.shtml"
59
onClick="window.open('','funnelweb','location,status,menubar,scrollbars,resizable',false).focus(); return true;"
61
<IMG SRC="binary/linklogo.gif"
62
WIDTH="64" HEIGHT="32"
63
BORDER="0" ALT="FunnelWeb"
64
HSPACE="0" VSPACE="1"></A><BR>
66
<TABLE CELLSPACING=0 CELLPADDING=0 BORDER=0><TR><TD BGCOLOR="#000000">
67
<A HREF="../tutorial/index.html"
68
TARGET="funnelwebtutorial"
69
onClick="window.open('','funnelwebtutorial','location,status,menubar,scrollbars,resizable',false).focus(); return true;"
70
><FONT COLOR="#FFFFFF"><B>Tutorial</B></FONT></A><BR>
72
<A HREF="../developer/index.html"
73
TARGET="funnelwebdeveloper"
74
onClick="window.open('','funnelwebdeveloper','location,status,menubar,scrollbars,resizable',false).focus(); return true;"
75
><FONT COLOR="#FFFFFF"><B>Developer</B></FONT></A><BR>
77
<A HREF="index.html"><FONT COLOR="#FFFFFF"><B>Reference</B></FONT></A><BR>
78
<A HREF="intro.html"><FONT COLOR="#FFFFFF">1 Introduction</FONT></A><BR>
79
<A HREF="interface.html"><FONT COLOR="#FFFFFF">2 Interface</FONT></A><BR>
80
<A HREF="scanner.html"><FONT COLOR="#FFFFFF">3 Scanner</FONT></A><BR>
81
<A HREF="parser.html"><FONT COLOR="#FFFFFF">4 Parser</FONT></A><BR>
82
<A HREF="analyser.html"><FONT COLOR="#FFFFFF">5 Analyser</FONT></A><BR>
83
<A HREF="tangle.html"><FONT COLOR="#FFFFFF">6 Tangle</FONT></A><BR>
84
<A HREF="weave.html"><FONT COLOR="#FFFFFF">7 Weave</FONT></A><BR>
85
<A HREF="shell.html"><FONT COLOR="#FFFFFF">8 Shell</FONT></A><BR>
86
<A HREF="commands.html"><FONT COLOR="#FFFFFF">9 Commands</FONT></A><BR>
87
<A HREF="glossary.html"><FONT COLOR="#FFFFFF">10 Glossary</FONT></A><BR>
88
<A HREF="references.html"><FONT COLOR="#FFFFFF">11 References</FONT></A><BR>
91
<A HREF="search.html"><FONT COLOR="#FFFFFF"><B>SEARCH</B></FONT></A><BR>
97
<TD WIDTH="360" VALIGN="top">
101
<A HREF="index.html"><IMG SRC="binary/title.gif"
102
WIDTH="316" HEIGHT="24"
103
BORDER="0" ALT="FunnelWeb Reference Manual"
104
HSPACE="0" VSPACE="0"></A>
105
<P><FONT SIZE="5">3.9 Suppressing End of Line Markers</FONT><BR>
109
<P>End of line markers can be suppressed by the
110
<SAMP>@-</SAMP> sequence. A single occurrence of a
111
<SAMP>@-</SAMP> sequence serves to suppress only the end of
112
line marker following it and must appear <I>exactly</I>
113
before the end of line marker to be suppressed. No trailing
114
spaces, <SAMP>@!</SAMP> comments, or any other characters are
115
permitted between a <SAMP>@-</SAMP> sequence and the end of
116
line that it is supposed to suppress. The <SAMP>@-</SAMP>
117
sequence is useful for constructing long output lines
118
without them having to appear in the input. It can also be
119
used in the same way as the <SAMP>@+</SAMP> was used in the
120
previous section to assist in exposing the structure of
121
output text without affecting the output text itself.
122
Finally, it is invaluable for suppressing the EOL after the
123
opening macro text <SAMP>@{</SAMP> construct. For example:
127
@$@<Walrus@>@{@-
135
@$@<Walrus@>@{I am the walrus!@}
138
<P>The comment construct (<SAMP>@!</SAMP>) can also be used
139
to suppress end of lines. However, the <SAMP>@-</SAMP>
140
construct should be preferred for this purpose as it makes
141
explicit the programmer's intent to suppress the end of
148
<TD ALIGN="left" VALIGN="bottom"><A HREF="scanner_eol_ins.html"><IMG SRC="binary/fw_left.gif" HEIGHT="32" WIDTH="32" BORDER="0" ALT="Prev"></A></TD>
149
<TD ALIGN="center" VALIGN="bottom"><A HREF="scanner.html"><IMG SRC="binary/fw_up.gif" HEIGHT="32" WIDTH="32" BORDER="0" ALT="Up"></A></TD>
150
<TD ALIGN="right" VALIGN="bottom"><A HREF="scanner_include.html"><IMG SRC="binary/fw_right.gif" HEIGHT="32" WIDTH="32" BORDER="0" ALT="Next"></A></TD>
159
<A HREF="mailto:webmaster@ross.net">Webmaster</A>
160
<A HREF="copyright.html">Copyright © Ross N. Williams 1992,1999. All rights reserved.</A><BR>
172
<!-- *********************************************************************** -->
173
<!-- End Of A FunnelWeb Manual Web Page (www.ross.net/funnelweb/) -->
174
<!-- *********************************************************************** -->
added
removed
reference/scanner_eol_supp.html
