SYNOPSIS
gphelp [-to_pod file] [-raw] [-detex] [-k] [-ch c1] [-cb c2] [-cu c3] [keyword [ @{1,2,3,4,5} ]] [tutorial] [refcard]...
DESCRIPTION
Invokes the PARI-GP online help script. By default, keyword is understood as a section heading (a GP function name), and gphelp looks for it in Chapter 3 of PARI User's Manual. If it is found, the corresponding section is copied to a temporary file in /tmp (or $GPTMPDIR), TeX is run then the corresponding section is displayed in a separate window, using xdvi (or $GPXDVI).
If more than one keyword is given on a single command line, the outputs are concatenated. If keyword is omitted, open the whole manual users.dvi. The keywords tutorial and refcard open the GP tutorial and reference card respectively.
GP defaults, help sections (1 to 11) as well as some keywords (readline, bnf, ell, all operators...) are recognized and treated in a special way to make sure they match a section heading. For instance && is translated to Comparison and boolean operators which isn't that obvious to guess. Make sure to enclose keyword between quotes if it contains dangerous characters (e.g spaces). For instance, you need to type
- gphelp -k "elliptic curves"
and not
- gphelp -k elliptic curves
which would look for "elliptic" then for "curves" and output e.g. ploth among the relevant sections.
FULL SEARCH: @ MARKERS
The pattern @x (where x is a chapter number between 1 and 5) at the end of keyword conducts the search in the corresponding chapter instead of the default Chapter 3. If the number is omitted, search the whole manual. For instance
- gphelp -k gerepile@4
- gphelp -k gerepile@
OPTIONS
The following command line options are available:- -cb, -color_bold c2
-
color used for bold. See
-color_help.
- -ch, -color_help c1
-
color (between 1 and 16) used for general printing. Only
significant in
detex
mode.
- -cu, -color_underline c3
-
color used for underline. See
-color_help.
- -detex
-
Use
detex
mode. The TeX file is converted to readable screen output that is directly
written to the terminal; don't use tex or xdvi.
- -k
-
Switch to
apropos
mode. Only write to standard output the list of section headings in manual
which contain
keyword.
You can then choose an element in the list and use it as argument for gphelp (surround it by quotes if it includes spaces), possibly followed by a trailing @ marker (see above).
- -raw
-
use internal format for output (using @x markers). For debugging only.
- -to_pod file
-
try to convert
file
from TeX to POD format. Will only work on some subset of PARI User's Manual
(Chapter 3, reference card). This should be the only arguments on the
command line.
ENVIRONMENT
- COLUMNS
-
number of columns available on screen (for
detex
mode)
- DISPLAY
-
where to launch the dvi previewer. If unset,
detex
mode is assumed automatically.
- GPDOCDIR
-
directory where PARI help files are located. Default value set at Configure
time.
- GPTEX
-
- TeX typesetting program to use
- GPTMPDIR
-
directory where temporary files are written
- GPXDVI
-
- dvi previewer to use
FILES
- gp
-
the gp calculator
- gphelp
-
the gphelp script
- users.dvi
-
PARI/GP User's Manual
- tutorial.dvi
-
PARI/GP tutorial
- refcard.dvi
-
GP reference card
- refcard.ps
-
GP reference card, printer ready
BUGS
The search algorithm is rather crude and the data searched rather unstructured. Hence, searching outside of Chapter 3 may not yield useful results, except in apropos mode (sections may be truncated too soon for instance).
Multiword search patterns have a tendency to fail due to various TeX constructs in the source.
AUTHORS
Originally written by Ilya Zakharevitch for the Math::Pari perl package. Rewritten and expanded by Karim Belabas for the main PARI distribution.
COPYING
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.