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04861939fc
The following are the changes in this release:
Fixed typo (missing quotes) in the env rule.
Fixed intendation problem in CHANGES.
Combined 2.12.9.1 changes into the 2.12.8.2 to 2.12.9.0
range, and thus renamed the range to 2.12.8.2 to 2.12.9.1.
Fixed issues related to building Makefile.simple.
Fixed how the Makefile variable MANPATH is set for macOS.
Added a bunch of information to the near bottom of HOWTO.INSTALL
on calc Makefiles. This information discusses the various
Makefiles found in the calc source.
Added comments in various calc Makefiles about their origin.
In particular, for Makefiles that are constructed such as
Makefile.simple, custom/Makefile and custom/Makefile.simple
there are comments about how they were made.
For all calc Makefiles, including those in sub-directories,
near the top there is now a line of the form:
# SRC: ... some message about the origin ...
Fixed how the calc(1) man page is installed under macOS.
Fixed how calc man page in ${CATDIR} is formed.
Fixed how Makefile.simple is formed.
Fixed the #! calc script argument processing. The initial #!
line must end in a -f. For example, if calc is in /usr/local/bin/calc,
then the following would be the first line of a calc script:
#!/usr/local/bin/calc -f
...
It is common that -q be usde with a calc script, so assuming the
same /usr/local/bin/calc path:
#!/usr/local/bin/calc -q -f
...
Use of -s in the #! first line of a calc script is not needed
since -f implies -f.
The argv() will now return values more typical of C's main().
Before it returned one less than the number of arguments. Now,
for example, when calc is given 2 args, argv() will return 3.
The value of argv(0) will be the path to calc, or in the
case of a #! calc cscript, it will return the name of the script.
Updated the calc man page and help/argv to reflect the
above changes.
Improved the formatting of the calc man page.
Fixed the formation of the win32 sub-directory via the win32_hsrc
Makefile rule.
Due to incompatible changes to the argv() function, and #! calc
scripts, we are setting the version to the next minor number:
2.13.0
100 lines
3.0 KiB
Plaintext
100 lines
3.0 KiB
Plaintext
NAME
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argv - count or value of a calc command line supplied argument
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SYNOPSIS
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argv([n])
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TYPES
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n nonnegative integer
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return any
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DESCRIPTION
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Without args, this builtin returns the number of calc command line
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strings available, including the program or script name.
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If the numeric arg is supplied, then the corresponding command line
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string is return, if it exists. Otherwise a nul() value is returned.
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In keeping with the argc/argv convention of C, argv(0) will refer
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to the name of the program. If the -f filename argument is used,
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then argv(0) will refer to the filename. In the case of a #! script,
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assuming the calc is located in /usr/local/bin/calc, the first
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line of a calc script would be:
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#!/usr/local/bin/calc -f
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...
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then argv(0) will refer to the filename of the script.
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As it is common to use -q in a calc script, and using that same
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/usr/local/bin/calc location:
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#!/usr/local/bin/calc -q -f
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...
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and again, argv(0) will refer to the filename of the script.
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The 1st argument to calc will be argv(1), and argv(argv()-1)
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will refer to the last. This differs from the way the param()
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builtin works.
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By default, calc will evaluate all of its command line arguments.
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However, if calc is invoked with -s, all non-dashed options will
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be left as unevaluated strings. Thus:
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calc -i 2+2
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will cause calc to print 4 and enter interactive mode. In this case
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argv() will return 1.
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On the other hand:
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calc -i -s 2+2
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will cause calc to interactive mode. The argv() builtin will return 2
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and argv(1) will return the string "2+2".
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EXAMPLE
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$ calc -s a bb ccc
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; argc = argv();
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; print "argc =", argc;
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argc = 4
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; print 'argv[0] = "': argv(0) : '"';
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argv[0] = "calc"
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; for (i = 1; i < argc; i++) print "argv[": i : '] = "': argv(i) : '"';
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argv[1] = "a"
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argv[2] = "bb"
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argv[3] = "ccc"
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LIMITS
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0 <= n < 2^31
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LINK LIBRARY
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none
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SEE ALSO
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param, system, usage
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## Copyright (C) 1999-2006,2021 Landon Curt Noll
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##
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## Calc is open software; you can redistribute it and/or modify it under
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## the terms of the version 2.1 of the GNU Lesser General Public License
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## as published by the Free Software Foundation.
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##
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## Calc is distributed in the hope that it will be useful, but WITHOUT
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## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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## Public License for more details.
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##
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## A copy of version 2.1 of the GNU Lesser General Public License is
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## distributed with calc under the filename COPYING-LGPL. You should have
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## received a copy with calc; if not, write to Free Software Foundation, Inc.
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## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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##
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## Under source code control: 1999/11/23 19:45:05
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## File existed as early as: 1999
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##
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## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
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## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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