Gecko [ takarazuka-bankin-syuuri.click ]

Name	Size	Permission
GET	14.71 KB	-rwxr-xr-x
[	40.52 KB	-rwxr-xr-x
a2p	105.32 KB	-rwxr-xr-x
aclocal	35.87 KB	-rwxr-xr-x
aclocal-1.13	35.87 KB	-rwxr-xr-x
addr2line	28.42 KB	-rwxr-xr-x
agentxtrap	19.16 KB	-rwxr-xr-x
animate	7.04 KB	-rwxr-xr-x
ar	61.21 KB	-rwxr-xr-x
arch	32.3 KB	-rwxr-xr-x
as	377.37 KB	-rwxr-xr-x
aspell	163.35 KB	-rwxr-xr-x
at	1.01 KB	-rwxr-xr-x
atq	1.01 KB	-rwxr-xr-x
atrm	1.02 KB	-rwxr-xr-x
autoconf	14.42 KB	-rwxr-xr-x
autoheader	8.33 KB	-rwxr-xr-x
autom4te	31.43 KB	-rwxr-xr-x
automake	246.44 KB	-rwxr-xr-x
automake-1.13	246.44 KB	-rwxr-xr-x
autoreconf	20.57 KB	-rwxr-xr-x
autoscan	16.72 KB	-rwxr-xr-x
autoupdate	33.08 KB	-rwxr-xr-x
awk	418.54 KB	-rwxr-xr-x
base64	36.48 KB	-rwxr-xr-x
basename	28.35 KB	-rwxr-xr-x
bash	941.93 KB	-rwxr-xr-x
bashbug-64	6.8 KB	-rwxr-xr-x
batch	137 B	-rwxr-xr-x
bison	393.34 KB	-rwxr-xr-x
bunzip2	31.89 KB	-rwxr-xr-x
byacc	84.48 KB	-rwxr-xr-x
bzcat	31.89 KB	-rwxr-xr-x
bzcmp	2.08 KB	-rwxr-xr-x
bzdiff	2.08 KB	-rwxr-xr-x
bzgrep	1.64 KB	-rwxr-xr-x
bzip2	31.89 KB	-rwxr-xr-x
bzip2recover	15.24 KB	-rwxr-xr-x
bzless	1.23 KB	-rwxr-xr-x
bzmore	1.23 KB	-rwxr-xr-x
c++	754.58 KB	-rwxr-xr-x
c++filt	27.91 KB	-rwxr-xr-x
c2ph	35.75 KB	-rwxr-xr-x
c89	224 B	-rwxr-xr-x
c99	215 B	-rwxr-xr-x
cagefs_enter.proxied	1.03 KB	-rwxr-xr-x
cal	36.8 KB	-rwxr-xr-x
captoinfo	64.26 KB	-rwxr-xr-x
cat	52.81 KB	-rwxr-xr-x
catchsegv	3.26 KB	-rwxr-xr-x
cc	750.58 KB	-rwxr-xr-x
chcon	61.46 KB	-rwxr-xr-x
chgrp	61.32 KB	-rwxr-xr-x
chmod	57.22 KB	-rwxr-xr-x
chown	61.36 KB	-rwxr-xr-x
chrt	32.17 KB	-rwxr-xr-x
cksum	32.38 KB	-rwxr-xr-x
cldetect	10.35 KB	-rwxr-xr-x
clear	7.02 KB	-rwxr-xr-x
clusterdb	53.2 KB	-rwxr-xr-x
cmp	44.21 KB	-rwxr-xr-x
col	23.88 KB	-rwxr-xr-x
colcrt	11.29 KB	-rwxr-xr-x
colrm	23.77 KB	-rwxr-xr-x
column	27.99 KB	-rwxr-xr-x
combinediff	48.7 KB	-rwxr-xr-x
comm	36.55 KB	-rwxr-xr-x
compare	11.09 KB	-rwxr-xr-x
composite	7.04 KB	-rwxr-xr-x
conjure	7.04 KB	-rwxr-xr-x
convert	7.04 KB	-rwxr-xr-x
cp	151.54 KB	-rwxr-xr-x
cpan	4.97 KB	-rwxr-xr-x
cpp	754.58 KB	-rwxr-xr-x
createdb	53.27 KB	-rwxr-xr-x
createlang	57.09 KB	-rwxr-xr-x
createuser	57.63 KB	-rwxr-xr-x
crontab	1.49 KB	-rwxr-xr-x
crontab.cagefs	49.13 KB	-rwxr-xr-x
csplit	48.82 KB	-rwxr-xr-x
ctags	237.98 KB	-rwxr-xr-x
curl	152.99 KB	-rwxr-xr-x
cut	40.61 KB	-rwxr-xr-x
cwebp	43.29 KB	-rwxr-xr-x
date	60.74 KB	-rwxr-xr-x
dbiprof	6.15 KB	-rwxr-xr-x
dbiproxy	5.35 KB	-rwxr-xr-x
dd	73.14 KB	-rwxr-xr-x
dehtmldiff	1.32 KB	-rwxr-xr-x
delv	39.98 KB	-rwxr-xr-x
df	102.55 KB	-rwxr-xr-x
diff	195.53 KB	-rwxr-xr-x
diff3	60.74 KB	-rwxr-xr-x
dig	146.97 KB	-rwxr-xr-x
dir	114.85 KB	-rwxr-xr-x
dircolors	40.44 KB	-rwxr-xr-x
dirname	28.31 KB	-rwxr-xr-x
display	7.04 KB	-rwxr-xr-x
dltest	11.05 KB	-rwxr-xr-x
dropdb	53.08 KB	-rwxr-xr-x
droplang	57.09 KB	-rwxr-xr-x
dropuser	53.05 KB	-rwxr-xr-x
du	110.34 KB	-rwxr-xr-x
dvipdf	1 KB	-rwxr-xr-x
dwebp	19.05 KB	-rwxr-xr-x
echo	32.31 KB	-rwxr-xr-x
ed	48.68 KB	-rwxr-xr-x
editdiff	2 KB	-rwxr-xr-x
egrep	290 B	-rwxr-xr-x
enc2xs	38.24 KB	-rwxr-xr-x
enchant	15.29 KB	-rwxr-xr-x
enchant-lsmod	11.13 KB	-rwxr-xr-x
env	28.33 KB	-rwxr-xr-x
eps2eps	639 B	-rwxr-xr-x
eqn	144.41 KB	-rwxr-xr-x
espdiff	1.53 KB	-rwxr-xr-x
ex	906.3 KB	-rwxr-xr-x
expand	32.48 KB	-rwxr-xr-x
expr	36.53 KB	-rwxr-xr-x
f95	754.58 KB	-rwxr-xr-x
factor	93.29 KB	-rwxr-xr-x
false	28.26 KB	-rwxr-xr-x
fc-cache	132 B	-rwxr-xr-x
fc-cache-64	15.45 KB	-rwxr-xr-x
fc-cat	15.4 KB	-rwxr-xr-x
fc-conflist	11.2 KB	-rwxr-xr-x
fc-list	11.26 KB	-rwxr-xr-x
fc-match	11.32 KB	-rwxr-xr-x
fc-pattern	11.26 KB	-rwxr-xr-x
fc-query	11.22 KB	-rwxr-xr-x
fc-scan	11.27 KB	-rwxr-xr-x
fc-validate	11.27 KB	-rwxr-xr-x
fgrep	290 B	-rwxr-xr-x
file	19.3 KB	-rwxr-xr-x
filterdiff	45.2 KB	-rwxr-xr-x
find	194.63 KB	-rwxr-xr-x
find2perl	23.06 KB	-rwxr-xr-x
fixcvsdiff	1.83 KB	-rwxr-xr-x
flex	318.07 KB	-rwxr-xr-x
flex++	318.07 KB	-rwxr-xr-x
flipdiff	48.7 KB	-rwxr-xr-x
flock	23.88 KB	-rwxr-xr-x
fmt	36.48 KB	-rwxr-xr-x
fold	36.46 KB	-rwxr-xr-x
free	19.33 KB	-rwxr-xr-x
funzip	31.38 KB	-rwxr-xr-x
g++	754.58 KB	-rwxr-xr-x
gawk	418.54 KB	-rwxr-xr-x
gcc	750.58 KB	-rwxr-xr-x
gcc-ar	26.45 KB	-rwxr-xr-x
gcc-nm	26.45 KB	-rwxr-xr-x
gcc-ranlib	26.45 KB	-rwxr-xr-x
gcov	311.45 KB	-rwxr-xr-x
gencat	22.11 KB	-rwxr-xr-x
geoiplookup	15.28 KB	-rwxr-xr-x
geoiplookup6	11.16 KB	-rwxr-xr-x
geqn	144.41 KB	-rwxr-xr-x
getconf	22.03 KB	-rwxr-xr-x
getent	26.39 KB	-rwxr-xr-x
getopt	15.38 KB	-rwxr-xr-x
gfortran	754.58 KB	-rwxr-xr-x
ghostscript	10.97 KB	-rwxr-xr-x
gif2webp	19.05 KB	-rwxr-xr-x
git	1.46 MB	-rwxr-xr-x
git-receive-pack	1.46 MB	-rwxr-xr-x
git-shell	717.95 KB	-rwxr-xr-x
git-upload-archive	1.46 MB	-rwxr-xr-x
git-upload-pack	791.44 KB	-rwxr-xr-x
gm	6.97 KB	-rwxr-xr-x
gmake	178.47 KB	-rwxr-xr-x
gneqn	271 B	-rwxr-xr-x
gnroff	3.31 KB	-rwxr-xr-x
gpg	732.4 KB	-rwxr-xr-x
gpg-agent	289.74 KB	-rwxr-xr-x
gpg-error	23.18 KB	-rwxr-xr-x
gpg-zip	3.23 KB	-rwxr-xr-x
gpg2	732.4 KB	-rwxr-xr-x
gpgsplit	48.88 KB	-rwxr-xr-x
gpgv	345.38 KB	-rwxr-xr-x
gpgv2	345.38 KB	-rwxr-xr-x
gpic	180.41 KB	-rwxr-xr-x
gprof	98.41 KB	-rwxr-xr-x
grep	155.3 KB	-rwxr-xr-x
grepdiff	45.2 KB	-rwxr-xr-x
groff	81.63 KB	-rwxr-xr-x
grops	140.85 KB	-rwxr-xr-x
grotty	98.59 KB	-rwxr-xr-x
groups	32.41 KB	-rwxr-xr-x
gs	10.97 KB	-rwxr-xr-x
gsbj	350 B	-rwxr-xr-x
gsdj	352 B	-rwxr-xr-x
gsdj500	352 B	-rwxr-xr-x
gslj	353 B	-rwxr-xr-x
gslp	350 B	-rwxr-xr-x
gsnd	277 B	-rwxr-xr-x
gsoelim	32.59 KB	-rwxr-xr-x
gtar	338.02 KB	-rwxr-xr-x
gtbl	115.96 KB	-rwxr-xr-x
gtroff	512.96 KB	-rwxr-xr-x
gunzip	2.2 KB	-rwxr-xr-x
gzexe	5.79 KB	-rwxr-xr-x
gzip	98.44 KB	-rwxr-xr-x
h2ph	27.65 KB	-rwxr-xr-x
h2xs	59.15 KB	-rwxr-xr-x
head	40.5 KB	-rwxr-xr-x
hexdump	32.02 KB	-rwxr-xr-x
host	127.02 KB	-rwxr-xr-x
hostid	28.3 KB	-rwxr-xr-x
hostname	15.41 KB	-rwxr-xr-x
hunspell	53.11 KB	-rwxr-xr-x
iconv	58.14 KB	-rwxr-xr-x
id	36.52 KB	-rwxr-xr-x
identify	7.06 KB	-rwxr-xr-x
idn	32.45 KB	-rwxr-xr-x
ifnames	4.03 KB	-rwxr-xr-x
igawk	3.11 KB	-rwxr-xr-x
import	7.04 KB	-rwxr-xr-x
infocmp	56.07 KB	-rwxr-xr-x
infotocap	64.26 KB	-rwxr-xr-x
install	139.64 KB	-rwxr-xr-x
instmodsh	4.15 KB	-rwxr-xr-x
interdiff	48.7 KB	-rwxr-xr-x
ionice	23.87 KB	-rwxr-xr-x
ipcrm	27.85 KB	-rwxr-xr-x
ipcs	48.36 KB	-rwxr-xr-x
isosize	23.83 KB	-rwxr-xr-x
ispell	988 B	-rwxr-xr-x
isql	31.69 KB	-rwxr-xr-x
iusql	23.61 KB	-rwxr-xr-x
join	48.75 KB	-rwxr-xr-x
kill	32.82 KB	-rwxr-xr-x
ld	982.58 KB	-rwxr-xr-x
ld.bfd	982.58 KB	-rwxr-xr-x
ldd	5.18 KB	-rwxr-xr-x
less	154.53 KB	-rwxr-xr-x
lessecho	11.11 KB	-rwxr-xr-x
lesskey	16.66 KB	-rwxr-xr-x
lesspipe.sh	2.24 KB	-rwxr-xr-x
lex	318.07 KB	-rwxr-xr-x
libnetcfg	15.36 KB	-rwxr-xr-x
libtool	314.04 KB	-rwxr-xr-x
libtoolize	76.8 KB	-rwxr-xr-x
link	28.3 KB	-rwxr-xr-x
ln	57.22 KB	-rwxr-xr-x
locale	37.11 KB	-rwxr-xr-x
localedef	318.31 KB	-rwxr-xr-x
logger	28.63 KB	-rwxr-xr-x
login	36.38 KB	-rwxr-xr-x
logname	28.31 KB	-rwxr-xr-x
look	11.27 KB	-rwxr-xr-x
lprsetup.sh	5.34 KB	-rwxr-xr-x
ls	114.85 KB	-rwxr-xr-x
lsdiff	45.2 KB	-rwxr-xr-x
lspgpot	1.06 KB	-rwxr-xr-x
lzma	73.61 KB	-rwxr-xr-x
m4	151.17 KB	-rwxr-xr-x
make	178.47 KB	-rwxr-xr-x
mcookie	15.44 KB	-rwxr-xr-x
md5sum	40.53 KB	-rwxr-xr-x
mdig	44.2 KB	-rwxr-xr-x
mesg	10.98 KB	-rwxr-xr-x
mkdir	77.9 KB	-rwxr-xr-x
mkfifo	61.58 KB	-rwxr-xr-x
mknod	65.61 KB	-rwxr-xr-x
mktemp	40.66 KB	-rwxr-xr-x
mogrify	7.04 KB	-rwxr-xr-x
montage	7.04 KB	-rwxr-xr-x
more	40.15 KB	-rwxr-xr-x
mv	127.3 KB	-rwxr-xr-x
my_print_defaults	6 MB	-rwxr-xr-x
mysql	7.15 MB	-rwxr-xr-x
mysql_config	5.11 KB	-rwxr-xr-x
mysqladmin	6.82 MB	-rwxr-xr-x
mysqlbinlog	7.12 MB	-rwxr-xr-x
mysqlcheck	6.84 MB	-rwxr-xr-x
mysqldump	6.9 MB	-rwxr-xr-x
mysqlimport	6.81 MB	-rwxr-xr-x
mysqlshow	6.81 MB	-rwxr-xr-x
namei	27.95 KB	-rwxr-xr-x
neqn	271 B	-rwxr-xr-x
net-snmp-create-v3-user	2.98 KB	-rwxr-xr-x
nice	32.32 KB	-rwxr-xr-x
nkf	266.84 KB	-rwxr-xr-x
nl	40.59 KB	-rwxr-xr-x
nm	41.4 KB	-rwxr-xr-x
nohup	32.42 KB	-rwxr-xr-x
nproc	32.37 KB	-rwxr-xr-x
nroff	3.31 KB	-rwxr-xr-x
nslookup	130.94 KB	-rwxr-xr-x
nsupdate	65.2 KB	-rwxr-xr-x
numfmt	64.71 KB	-rwxr-xr-x
objcopy	227.33 KB	-rwxr-xr-x
objdump	357.69 KB	-rwxr-xr-x
od	64.81 KB	-rwxr-xr-x
odbc_config	11.04 KB	-rwxr-xr-x
odbcinst	27.69 KB	-rwxr-xr-x
openssl	542.27 KB	-rwxr-xr-x
pango-list	11.1 KB	-rwxr-xr-x
pango-querymodules-64	28.26 KB	-rwxr-xr-x
pango-view	49.47 KB	-rwxr-xr-x
passwd	1.02 KB	-rwxr-xr-x
paste	32.34 KB	-rwxr-xr-x
patch	147 KB	-rwxr-xr-x
pathchk	32.31 KB	-rwxr-xr-x
pdf2dsc	698 B	-rwxr-xr-x
pdf2ps	909 B	-rwxr-xr-x
perl	11.14 KB	-rwxr-xr-x
perl.clean	462 B	-rwxr-xr-x
perl.prov	6.03 KB	-rwxr-xr-x
perl.prov.files	1014 B	-rwxr-xr-x
perl.req	10.56 KB	-rwxr-xr-x
perl.req.files	1.17 KB	-rwxr-xr-x
perl5.16.3	11.14 KB	-rwxr-xr-x
perl5i	11.2 KB	-rwxr-xr-x
perlbug	43.61 KB	-rwxr-xr-x
perlcritic	41.53 KB	-rwxr-xr-x
perldepgentest	4.03 KB	-rwxr-xr-x
perldl	39.58 KB	-rwxr-xr-x
perldoc	203 B	-rwxr-xr-x
perlindex	19.3 KB	-rwxr-xr-x
perlivp	10.52 KB	-rwxr-xr-x
perlsh	11.9 KB	-rwxr-xr-x
perlthanks	43.61 KB	-rwxr-xr-x
perltidy	114.19 KB	-rwxr-xr-x
perlver	10.28 KB	-rwxr-xr-x
pf2afm	498 B	-rwxr-xr-x
pfbtopfa	516 B	-rwxr-xr-x
pg_dump	305.75 KB	-rwxr-xr-x
pg_dumpall	73.89 KB	-rwxr-xr-x
pg_restore	126.79 KB	-rwxr-xr-x
pgawk	418.63 KB	-rwxr-xr-x
pgrep	27.67 KB	-rwxr-xr-x
php	6.09 MB	-rwxr-xr-x
php-cgi	6.09 MB	-rwxr-xr-x
php-config	4.42 KB	-rwxr-xr-x
phpize	4.65 KB	-rwxr-xr-x
pic	180.41 KB	-rwxr-xr-x
piconv	7.99 KB	-rwxr-xr-x
pinentry	2.54 KB	-rwxr-xr-x
pinentry-curses	49.19 KB	-rwxr-xr-x
ping	1.02 KB	-rwxr-xr-x
pinky	36.58 KB	-rwxr-xr-x
pkg-config	44.38 KB	-rwxr-xr-x
pkill	27.67 KB	-rwxr-xr-x
pl2pm	4.42 KB	-rwxr-xr-x
pmap	27.61 KB	-rwxr-xr-x
pod2html	4 KB	-rwxr-xr-x
pod2latex	10.1 KB	-rwxr-xr-x
pod2man	13.26 KB	-rwxr-xr-x
pod2text	10.75 KB	-rwxr-xr-x
pod2usage	3.67 KB	-rwxr-xr-x
podchecker	3.7 KB	-rwxr-xr-x
podselect	2.55 KB	-rwxr-xr-x
post-grohtml	187.55 KB	-rwxr-xr-x
pphs	404 B	-rwxr-xr-x
pr	65.11 KB	-rwxr-xr-x
pre-grohtml	86.24 KB	-rwxr-xr-x
precat	5.52 KB	-rwxr-xr-x
preunzip	5.52 KB	-rwxr-xr-x
prezip	5.52 KB	-rwxr-xr-x
prezip-bin	11.05 KB	-rwxr-xr-x
printafm	395 B	-rwxr-xr-x
printenv	28.29 KB	-rwxr-xr-x
printf	48.61 KB	-rwxr-xr-x
prove	13.13 KB	-rwxr-xr-x
ps	97.77 KB	-rwxr-xr-x
ps2ascii	631 B	-rwxr-xr-x
ps2epsi	2.69 KB	-rwxr-xr-x
ps2pdf	272 B	-rwxr-xr-x
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ps2pdf13	215 B	-rwxr-xr-x
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ps2ps	647 B	-rwxr-xr-x
ps2ps2	669 B	-rwxr-xr-x
psed	52.08 KB	-rwxr-xr-x
psql	438.74 KB	-rwxr-xr-x
pstruct	35.75 KB	-rwxr-xr-x
ptx	65.09 KB	-rwxr-xr-x
pwd	32.45 KB	-rwxr-xr-x
pwdx	11.27 KB	-rwxr-xr-x
pydoc	78 B	-rwxr-xr-x
python	6.98 KB	-rwxr-xr-x
python2	6.98 KB	-rwxr-xr-x
python2.7	6.98 KB	-rwxr-xr-x
ranlib	61.22 KB	-rwxr-xr-x
raw	15.27 KB	-rwxr-xr-x
readelf	505.77 KB	-rwxr-xr-x
readlink	40.82 KB	-rwxr-xr-x
realpath	61.23 KB	-rwxr-xr-x
recode	39.87 KB	-rwxr-xr-x
recountdiff	3.36 KB	-rwxr-xr-x
red	89 B	-rwxr-xr-x
rediff	36.04 KB	-rwxr-xr-x
reindexdb	57.27 KB	-rwxr-xr-x
rename	11.26 KB	-rwxr-xr-x
renice	11.2 KB	-rwxr-xr-x
replace	3.48 MB	-rwxr-xr-x
reset	19.6 KB	-rwxr-xr-x
rev	11.26 KB	-rwxr-xr-x
rm	61.4 KB	-rwxr-xr-x
rmdir	44.46 KB	-rwxr-xr-x
rpcgen	90.45 KB	-rwxr-xr-x
rsync	484.2 KB	-rwxr-xr-x
run-with-aspell	85 B	-rwxr-xr-x
runcon	32.47 KB	-rwxr-xr-x
rvi	906.3 KB	-rwxr-xr-x
rview	906.3 KB	-rwxr-xr-x
rvim	2.23 MB	-rwxr-xr-x
s2p	52.08 KB	-rwxr-xr-x
scl	19.5 KB	-rwxr-xr-x
scl_enabled	258 B	-rwxr-xr-x
scl_source	1.83 KB	-rwxr-xr-x
scp	89.24 KB	-rwxr-xr-x
script	19.61 KB	-rwxr-xr-x
sdiff	48.48 KB	-rwxr-xr-x
sed	74.29 KB	-rwxr-xr-x
selectorctl	7.63 KB	-rwxr-xr-x
seq	48.47 KB	-rwxr-xr-x
setsid	11.23 KB	-rwxr-xr-x
setterm	27.48 KB	-rwxr-xr-x
sftp	142.02 KB	-rwxr-xr-x
sh	941.93 KB	-rwxr-xr-x
sha1sum	36.57 KB	-rwxr-xr-x
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Code Editor : perldl

#!/usr/bin/perl

eval 'exec /usr/bin/perl  -S $0 ${1+"$@"}'
    if 0; # not running under some shell
    eval 'exec perl -S $0 "$@"'
        if 0;

##########################################################################
# Here starts the actual script

# Simple shell for PDL

use vars qw($VERSION $HOME $Modules);

$VERSION = '1.357';

print "perlDL shell v$VERSION
 PDL comes with ABSOLUTELY NO WARRANTY. For details, see the file
 'COPYING' in the PDL distribution. This is free software and you
 are welcome to redistribute it under certain conditions, see
 the same file for details.\n";

# Useful shell variables

$PERLDL::ESCAPE = '#'; 		# Default shell escape
$PERLDL::HISTFILESIZE = 500;    # Number of lines to keep in history
$PERLDL::MULTI = 1;             # Enable multi-lines by default
$PERLDL::NO_EOF = 0;            # Disable EOF protection by default
$PERLDL::NO_EOF = 1 if $^O =~ 'MSWin';  # ...but enable for windows 
$PERLDL::PROMPT = "pdl> ";
$PERLDL::PREFIX_RE = qr(^\s*(?:pdl|perldl)>\s*); # RE for shell prompts
$PERLDL::PAGER  = (exists $ENV{PAGER} ? $ENV{PAGER} : 'more');
				# Default output paging program
$PERLDL::PAGE   = 0;
$PERLDL::PAGING = 0;
@PERLDL::AUTO   = ();
$PERLDL::PREPROCESS  = undef;   # old interface -- disabled
@PERLDL::PREPROCESS = ();       # new preprocessor pipeline
$HOME = $ENV{HOME};             # Useful in shell

if ($^O =~ /win32/i and $HOME eq ""){
   $HOME = $ENV{USERPROFILE};
   $HOME =~ s/\\/\//g;
   }

$,=" "; # Default

$Modules = $Modules = "";	# pacify -w

sub mypdlconfig {
  require Config; # pick up perl version info
  eval 'require PDL::Version' if not defined $PDL::Version::VERSION;
  eval 'require PDL::Config';
  eval "use Data::Dumper";
  my $hasdumper = $@ eq "" ? 1 : 0;
  eval "use PDL::Bad;";
  my $bflag = defined($PDL::Bad::Status) && $PDL::Bad::Status;

my $txt = "\nSummary of my PDL configuration\n\n";
  $txt .= "VERSION: PDL v$PDL::Version::VERSION";
  $txt .= " (supports bad values)" if $bflag;
  $txt .= "\n\n";
  if ($hasdumper && %PDL::Config) {
    $txt .= Data::Dumper->Dump([{%PDL::Config}],['%PDL::Config']);
  } else {
    $txt .= "Could not obtain \%PDL::Config\n";
  }
  $txt .= Config::myconfig(); # append perl config info
}

sub preproc_registered ($) {
  my ($sub) = @_;
  die "preprocessors must be code references"
     unless ref $sub eq 'CODE';
  return grep ($_ == $sub, @PERLDL::PREPROCESS) > 0;
}

sub preproc_add ($) {
  my ($sub) = @_;
  die "preprocessors must be code references"
     unless ref $sub eq 'CODE';
  push @PERLDL::PREPROCESS, $sub;
  return $sub;
}

sub preproc_del ($) {
  my ($sub) = @_;
  die "preprocessors must be code references"
     unless ref $sub eq 'CODE';
  die "preprocessor can't be deleted: not installed"
    unless preproc_registered $sub;
  @PERLDL::PREPROCESS = grep ($_ != $sub, @PERLDL::PREPROCESS);
  return $sub;
}

# Parse ARGV
my $read_from_file;

while(defined($_ = shift @ARGV)) {
	if($_ eq "-tk") {
                if ($^O eq 'MSWin32') {
                   print "-tk option not supported for windows\n";
                   next;
                }
		print "Using Tk";
		eval "use Tk;";
                if ($@ eq "") {
                   print " v$Tk::VERSION\n"
                      if defined $Tk::VERSION; # make -w happy
                } else {
                   print ", sorry can't load module Tk\n";
                }
		next;
        } elsif($_ eq "-glut") {
                if ($^O eq 'MSWin32') {
                   print "-glut option not supported for windows\n";
                   next;
                }
		print "Using OpenGL for GLUT support";
		eval "use OpenGL;";
                if ($@ eq "") {
                   print " v$OpenGL::VERSION\n"
                      if defined $OpenGL::VERSION; # make -w happy
                } else {
                   print ", sorry can't load module OpenGL\n";
                }
                OpenGL::glutInit() unless OpenGL::done_glutInit();
		next;
	} elsif(/^-f(.*)/) {
		my $file = $1;
		if(0 == length $1) {
			$file = shift @ARGV;
		}
		print "Doing '$file'\n";
		do $file;
		if($@) {
			die "Initialization error: $@";
		}
		next;
	} elsif(/^-w$/){ 
		$^W = 1;
		next;
        } elsif (/^-(M|m)([\w:]+)(\=\w+)?$/x) {
                my ($way,$m,@im) = ($1,$2,$3?substr($3,1):());
                eval "require $m";
                warn, next if $@;
                if ($way eq 'M') {
                	$m->import(@im);
                } else {
                        $m->unimport(@im);
                }
      } elsif (/^-I (\S*) $/x) {
            my $dir = $1;
            $dir = $ARGV[++$arg]
              if !$dir;
            if ($dir =~ m{^ \/ }x) {
              unshift(@INC, $dir);
            } else {
              require FindBin;
              die "Error: can't find myself" if ! $FindBin::Bin;
              unshift(@INC, "$FindBin::Bin/$dir");
            }

} elsif (/^-V\s*$/) {
         print mypdlconfig();
         exit 0;
       } elsif( /^-\s*$/) {

$read_from_file = 1;
	 last;

} else {
            print << 'EOP';
Usage: perldl [options]
  -glut       try to load OpenGL module (Enables
                readline event-loop processing).
  -tk         try to load Tk module (Enables
                readline event-loop processing).
  -f <file>   execute file <file> before starting perldl
  -w          run with warning messages turned-on 
  -m <module> unload module <module>
  -M <module> load module <module>
  -I <dir>    Add <dir> to include path.
  -V          print PDL version info (e.g. for a bug report)
  -           Following arguments are files for input.

EOP
          die("Unknown argument $_");
	  }

}

my $readlines;
if(!$read_from_file  and  -t STDIN) {
  eval "use Term::ReadLine";
  $readlines = ($@ eq "");
} else {
  $readlines=0;
}

my @enabled = ();
push @enabled, "ReadLines" if $readlines;

eval 'use PDL::NiceSlice';
unless ($@) {
  my $report = 0;
  sub report {
    my $ret = $report;
    $report = $_[0] if $#_ > -1;
    return $ret;
  }
  my $preproc = sub { my ($txt) = @_;
	  my $new = PDL::NiceSlice::perldlpp('main',$txt);
	  print STDERR "processed $new\n" if report && $new ne $txt;
	  return $new;
  };
  sub trans {
     preproc_add $preproc unless preproc_registered $preproc;
     preproc_del $preproc if $#_ > -1 && !$_[0] &&
        preproc_registered $preproc;
  }
  sub notrans { trans 0 }
  trans; # switch on by default
  push @enabled, "NiceSlice";
}

eval "use Text::Balanced";
my $multi_ok = ($@ eq "");
$PERLDL::MULTI = 0 unless($multi_ok);
push @enabled,"MultiLines" if $multi_ok;

print join(', ',@enabled)," enabled\n" if @enabled > 0;

if ( $readlines ){

$PERLDL::TERM = Term::ReadLine->new('perlDL', \*STDIN, \*STDOUT);

if (defined &OpenGL::done_glutInit ) {
       # Attempt to use with FreeGLUT
       if ($PERLDL::TERM->can('event_loop')) {
          print "Using FreeGLUT event loop\n";
          # Presumably, if you're using this loop, you're also selecting on other
          # fileno's.  It is up to you to add that in to the wait callback (first
          # one passed to event_loop) and deal with those file handles.
    
          $PERLDL::TERM->event_loop(
             sub {
                # This callback is called every time T::RL wants to
                # read something from its input.  The parameter is
                # the return from the other callback.
                my $fileno = shift;
                my $rvec = '';
                vec($rvec, $fileno, 1) = 1;
                while(1) {
                   select my $rout = $rvec, undef, undef, 0;
                   last if vec($rout, $fileno, 1);
                   OpenGL::glutMainLoopEvent();
                }
             },
             sub {
                # This callback is called as the T::RL is starting up
                # readline the first time.  The parameter is the file
                # handle that we need to monitor.  The return value
                # is used as input to the previous callback.
    
                # We return the fileno that we will use later.
    
                # cygwin/TRL::Gnu seems to use some other object here
                # that doesn't respond to a fileno method call (rt#81344)
                fileno($_[0]);
             }
          ) unless $Term::ReadLine::toloop;
       } else {
          warn("Sorry, cannot use FreeGLUT with this version of ReadLine\n");
       }
    }
    if(defined &Tk::DoOneEvent and not ref $Term::ReadLine::toloop) {
    	# Attempt to use with Tk
        if(${$PERLDL::TERM->Features}{tkRunning}) {
		print "Using Tk event loop\n";
		$PERLDL::TERM->tkRunning(1);
	} else {
		warn("Sorry, cannot use Tk with this version of ReadLine\n");
	}
    }
    if ( ( -e "$HOME/.perldl_hist" )
	&& ( open HIST, "<$HOME/.perldl_hist" ) ) {
	my @allhist = <HIST>;
	close HIST;
	map s/\n//g , @allhist ;
	foreach (@allhist) {
	    $PERLDL::TERM->addhistory($_);
	}
    }
    eval <<'EOEND';
sub END {

# Save History in $ENV{'HOME'}/.perldl_hist
    # GetHistory doesn't work on all versions...
    my @a= $PERLDL::TERM->GetHistory() if $PERLDL::TERM->can('GetHistory');

$#a-- if $a[-1] =~ /^(q$|x$|\s*exit\b|\s*quit\b)/; # chop off the exit command
    @a= @a[($#a-$PERLDL::HISTFILESIZE+1)..($#a)] if $#a > $PERLDL::HISTFILESIZE-1 ;
    if( open HIST, ">$HOME/.perldl_hist" ) {
	print HIST join("\n",@a);
	close HIST;
    } else {
	print " Unable to open \"$HOME/.perldl_hist\"\n";
    }
}
EOEND
}

sub l {
  if ($readlines) {
    my $n = $#_ > -1 ? shift : 20;
    my @h = $PERLDL::TERM->GetHistory();
    my $min = $#h < $n-1 ? 0 : $#h-$n+1;
    map {print "$_: $h[$_]\n"} ($min..$#h);
  }
}

sub page {
  $PERLDL::PAGE = (defined $_[0] ? $_[0] : 1);
}
sub nopage {
  page(0);
}
sub startpage {
  if ($PERLDL::PAGE) {
    open(SAVEOUT, '>&STDOUT');
    open(STDOUT, "| $PERLDL::PAGER");
    $PERLDL::PAGING = 1;
  }
}
sub endpage {
  if ($PERLDL::PAGING) {
    close(STDOUT);
    open(STDOUT, '>&SAVEOUT');
    $PERLDL::PAGING = 0;
  }
}

sub startup_def {
  return "PDL/default.pdl" if $^O =~ /win32/i;
  return "PDL/default.perldlrc";
}

# Global and local startup

my $startup_file = -e "$HOME/.perldlrc" ? "$HOME/.perldlrc" : startup_def();

print "Reading $startup_file...\n";

eval 'require "'.$startup_file.'"';
my $PDL_OK = ($@ eq "");
if ($PDL_OK) {
   require PDL::Version if not defined $PDL::Version::VERSION;
   print "Type 'demo' for online demos\n";
   eval "use PDL::Bad;";
   my $bflag = defined($PDL::Bad::Status) && $PDL::Bad::Status;
   if ( $bflag ) {
      print "Loaded PDL v$PDL::Version::VERSION (supports bad values)\n";
   } else {
      print "Loaded PDL v$PDL::Version::VERSION\n";
   }
}else{
   warn "WARNING: Error loading PDL: '$@' - trying blib. \n";
   eval "use blib";
   delete $INC{$startup_file};  # so require will try again!
   eval 'require "'.$startup_file.'"';
   $PDL_OK = ($@ eq "");
   if ($PDL_OK) {
      require PDL::Version if not defined $PDL::Version::VERSION;
      print "Loaded PDL v$PDL::Version::VERSION\n";
   }else{
      warn "WARNING: PDL startup not found only plain perl available\n";
      $PERLDL::PROMPT = 'perl> ';  # so there is visual indication of no PDL

eval << 'EOD'; # Fallback eval routine - proper one defined in PDL::Core

sub eval_and_report {
   my $__code = shift; # Can be code ref or string
   my $__string;
   $__string = (ref $__code eq "CODE") ? '&$__code()' : $__code;
   eval $__string; # Use boring eval() which misses some errors
   return $@;
}
EOD

}
}

print "\nNote: AutoLoader not enabled ('use PDL::AutoLoader' recommended)\n\n"
  unless defined($PDL::AutoLoader::Rescan);

if (-e 'local.perldlrc') {
    print "Reading local.perldlrc ...\n";
    require 'local.perldlrc' ;
}

# Short hand for some stuff

sub p { local $^W=0; print(@_); }  # suppress possible undefined var message 
                                   # (dirty)

my %demos =
    (
     'pdl' => 'PDL::Demos::General', # have to protect pdl as it means something
     '3d' => 'PDL::Demos::TriD1',
     '3d2' => 'PDL::Demos::TriD2',
     '3dgal' => 'PDL::Demos::TriDGallery',
     'pgplot' => 'PDL::Demos::PGPLOT_demo',
     'ooplot' => 'PDL::Demos::PGPLOT_OO_demo', # note: lowercase
     'bad' => 'PDL::Demos::BAD_demo',
     'bad2' => 'PDL::Demos::BAD2_demo',
     'transform' => 'PDL::Demos::Transform_demo',
     'cartography' => 'PDL::Demos::Cartography_demo',
     'gnuplot' => 'PDL::Demos::Gnuplot_demo',
     'prima' => 'PDL::Demos::Prima',
     );

sub demo {
    local $_ = lc $_[0] ;
    if(/^$/) {
	print <<EOD;
Use:
   demo pdl         # general demo

demo 3d          # 3d demo (requires TriD with OpenGL or Mesa)
   demo 3d2         # 3d demo, part 2. (Somewhat memory-intensive)
   demo 3dgal       # the 3D gallery: make cool images with 3-line scripts

demo pgplot      # PGPLOT graphics output (Req.: PGPLOT)
   demo OOplot      # PGPLOT OO interface    (Req.: PGPLOT)

demo gnuplot     # Gnuplot graphics (requires PDL::Graphics::Gnuplot)
   demo prima       # Prima graphics (requires PDL::Graphics::Prima)

demo transform   # Coordinate transformations (Req.: PGPLOT)
   demo cartography # Cartographic projections (Req.: PGPLOT)

demo bad         # Bad-value demo (Req.: bad value support)
   demo bad2        # Bad-values, part 2 (Req.: bad value support and PGPLOT)

EOD
    return;
    } # if: /^$/

if ( exists $demos{$_} ) {
	require PDL::Demos::Screen; # Get the routines for screen demos.
	my $name = $demos{$_};
	eval "require $name;"; # see docs on require for need for eval
	$name .= "::run";
	&{$name}();
    } else {
	print "No such demo!\n";
    }

} # sub: demo

$SIG{'INT'} = sub { die "Ctrl-C detected\n" }; # Ctrl-C handler

my $preproc_warned = 0;
sub preproc_oldwarn {
  warn << 'EOW';

Deprecated usage: $PERLDL::PREPROCESS was set.
 Usage of this variable is now strongly deprecated.
 To enable preprocessing with recent versions of perldl
 you should use the 'preproc_add' function. For details
 check the perldl manpage.

EOW
  $preproc_warned = 1; # warn only once
}

#
# count_tags: Return a string containing (in order) the open brackets
# and strings in the string that is passed in.  Used for multi-line parsing.
#
# Works by analysing the error message returned by Text::Balanced -- this
# is sort of fragile against changes in Text::Balanced, but what the heck.
#  --CED 18-Mar-2003
#
sub count_tags {
    my $s = shift;

$s =~ s/\\.//g; # Ignore all escaped characters

return undef unless($s =~ m/[^\s]/);
    
    # [Ignore quotelike operators: they cause more trouble than they're worth!]

our($prefix,$delim,%closers);
    unless(defined $prefix) {
	$delim = '{[(`\'")]}';
	%closers = ('{'=>'}','['=>']','('=>')');
    }

# Run Text::Balanced on the string with a '{' in front of it, to 
    # make sure that all quoted strings are "embedded" in the outermost "{".
    # The whitespace works around a short-string bug in extract_bracketed.
    my $a;
    my @result;
    $s =~ s/^\s*\#.*$//mg;  # Eliminate comment lines before extract.

eval { @result = 
	       Text::Balanced::extract_bracketed("{".$s, $delim, $prefix);
	   $a = $@;
       };

print "a = $a\nreturn = '",join("','",@result),"'\n" 
	if($PERLDL::debug);

if($a =~ m/^Did not find/) {
	# No quotes -- this should never happen and is a syntax error.
	print STDERR "[Error in parsing: this should never happen!]\n" 
	    if($PERLDL::debug);
	return undef;
    }
    elsif($a =~ m/^Unmatched emb\w+ quote $(.)$, de\w+ at offset (\d+)/) {
	# Embedded quote: try to close it and reparse.
	$a = $1;
	return count_tags($s.$1) . $a;
    }
    elsif($a =~ m/^Mismatched closing bracket/) {
	# This is an error condition - return false and let perl parse it
	return undef;
    }
    elsif($a =~ m/^Unmatched opening bracket$s$\: \{\.\.(.\.\.)+/) {
	$a = $1;
	$a=~ s/\.\.//g;
	return count_tags($s.$closers{$a}) . $a; 
    }
    elsif($a =~ m/^Unmatched opening bracket$s$\: \{\.\.\,/) {
	# Should have exactly one unmatched opening bracket.
	return undef;
    } 
    elsif(!$a) {
	return undef;
    }

print STDERR "Unknown error message '$a' from parser...\n"
	if($PERLDL::debug);
    return undef;
}

#
# process_input -- this is the central grab-some-input-and-execute it loop.
# 
sub process_input { 
  my $lines;

if($PERLDL::MULTI && !$multi_ok) {
      $PERLDL::MULTI = 0;
      print STDERR "WARNING: Text::Balanced not present; disabling multi-line parsing.\n";
  }
  
  # The {} around the do let us get out with 'last' in the EOF case.
 multiline: { 
     my $cont;
     $lines = "";

do {
	 local $, = "";

my $prompt = $cont ? "..$cont".(" "x(5-length($cont)))."> " : 
	     ((ref $PERLDL::PROMPT) ? &$PERLDL::PROMPT : $PERLDL::PROMPT);

if ($readlines) {
	     $_ = $PERLDL::TERM->readline($prompt);
	 }else{
	     print $prompt if(-t ARGV);  # Don't print prompt in pipes
	     $_ = <>;
	 }
	 
	 if(!defined $_) {
	     if($cont) {
		 if( $PERLDL::NO_EOF > 1 && -t STDIN ) {
		     print STDERR "\nEOF ignored.  (Close delimiters to end block. \$PERLDL::NO_EOF = $PERLDL::NO_EOF)\n";
		 } else {
		     last multiline;
		 }
	     } else {
		 if($PERLDL::NO_EOF && -t STDIN ) {
		     print STDERR "EOF ignored. ('q' or 'exit' to quit.  \$PERLDL::NO_EOF = $PERLDL::NO_EOF)\n";
		 } else {
		     print STDERR "EOF detected, exiting shell.\n";
		     exit 0;
		 }
	     }
	 }
	 
	 $lines .= "\n" if($cont); # Make multi-line strings work right.
	 $lines .= $_;
	 print "lines = $lines\n" if($PERLDL::debug);
     } while( $PERLDL::MULTI && ($cont = count_tags($lines)) );

} 
  
  # Execute the list of auto-code
  
  for my $c (@PERLDL::AUTO) {
      my $mess = eval_and_report($c);
      warn $mess if $mess;
  }

# Filter out PDL shell prefixes from cut-n-pasted lines
  if ( $lines =~ s/$PERLDL::PREFIX_RE// and $readlines ) {
     my @hist = $PERLDL::TERM->GetHistory();
     foreach my $entry (@hist) { $entry =~ s/$PERLDL::PREFIX_RE//; }
     $PERLDL::TERM->SetHistory(@hist);
  }
  
  if(!defined $lines || lc $lines eq 'q' || lc $lines eq 'x' || lc $lines eq 'quit') {exit};
  next if $lines =~/^\s*$/; # Blank line - do nothing
  
  $lines =~ s/^\s*\?\?\s*/apropos /; # Make '??' = 'apropos'
  $lines =~ s/^\s*\?\s*/help /;      # Make lone '?' = 'help'

if ( $lines =~ /^\s*(help|usage|apropos|sig|badinfo|demo)\s+/) { # Allow help foo (no quotes)
      my @t = split(/\s+/,$lines);
      my $a;
      foreach $a(@t) { $a=~s/^["']+//; $a=~s/['"]+$//; };
      $t[1] = "'".$t[1]."'"  if ($#t == 1 && !($t[1] =~ /^\$/));
      $lines = join(' ',@t);
  }

if (substr($lines,0,1) eq substr($PERLDL::ESCAPE,0,1) and
      substr($lines,0,2) ne '#!') {  # Allow escapes, avoid shebang
      my @lines = split /\n/, $lines;
      system(substr(shift @lines,1)); # Shell escape
      $lines = join("\n",@lines);
      next;
  } else {
      # Send code to pre-processor filters if defined
      for my $filter (@PERLDL::PREPROCESS) {
          $lines = $filter->($lines);
      }

# honor the deprecated interface for now
      if (defined $PERLDL::PREPROCESS && 
	  ref($PERLDL::PREPROCESS) eq 'CODE') {
          preproc_oldwarn() unless $preproc_warned;
          $lines = &$PERLDL::PREPROCESS($_);
      }
      
      startpage;
      my $mess = eval_and_report($lines);
      warn $mess if $mess;
      endpage;
  }
  print "\n";
}

######################################################################
######################################################################
#####
##### Main loop is here! (Commands not inside any sub!)

# check for old usage of PERLDL::PREPROCESS
if (defined $PERLDL::PREPROCESS) {
   preproc_oldwarn() unless $preproc_warned;
}

$|=1;
while(1) {
  eval {process_input()};
  if ($@) {
    if ($@ =~ /Ctrl-C detected/) {
      print "Ctrl-C detected\n";
      next;
    } else {
      print "Unknown error: $@\n exiting...\n";
      last;
    }
  }
}

#####
#####
######################################################################
######################################################################

# Work routine to eval code and post-process messages
# Currently used by 'perldl' shell

sub eval_and_report {
  my $__code = shift; # Can be code ref or string

$@ = ""; # clear $@ since we might not execute the eval below

## Compile the code ref to execute.  The code gets put inside {} braces
  ## so that there is a trivial loop (the simple block) for 'last' and 'next'
  ## to escape from.  (Otherwise perl 5.6.1 and 5.8 do a little fandango
  ## on stack if you type "last" at the shell).  --CED 18-Mar-2003

my $__coderef = (ref $__code eq "CODE") ? $__code : eval << "EOD"
							    
							    sub {
							      {
								$__code;
							      }
							    }
EOD
;

%@ = (); # Workaround to prevent spurious loss of $@ in early (pre-5.14 anyway) versions of perl

if( (!$@) and (ref $__coderef eq 'CODE')) { 
      eval { &$__coderef(); die $@ if($@); };
  }

if ($@) {
      my $mess = $@;

# Remove surplus parts

$mess =~ s/^\s*$in cleanup$\s+//;   # 'cleanup ...' from Usage:...
      $mess =~ s/\n\s*$in cleanup$.*$//;  # 'cleanup...'s at end
      $mess =~ s/\s+at $eval \d+$ line \d+\.?$//; # at eval ?? line ??.

return $mess;  # Report error
  }
  return "";
}

__END__

=head1 NAME

perldl - Simple shell for PDL (see also L<pdl2>)

=head1 SYNOPSIS

Use PDL interactively:

bash$ perldl
  pdl> $a = sequence(10) # or any other perl or PDL command
  
  bash$ pdl
  pdl> print "Hello, world!\n";

Run a script:

bash$ cat > pdlscript
  #!/usr/bin/pdl
  print "Hello, world!\n";
  ...

=head1 DESCRIPTION

The program B<perldl> is a simple shell (written in perl) for
interactive use of PDL.  It consists of a command-line interface that
supports immediate interpretation of perl commands and expressions.
Perl expressions, including PDL constructs, can be entered directly at
the keyboard and are compiled and executed immediately.  The syntax is
not exactly identical to Perl, in that under most circumstances ending
a line causes immediate execution of the command entered so far (no
trailing ';' is required).

The synonym B<pdl> is a compiled executable that is useful as a script
interpreter using UNIX shebang (C<#!>) syntax.  This is useful for generating
and re-executing command-journal files from B<perldl>.

The B<perldl> shell runs an initial startup file (C<~/.perldlrc>) that can
be used to pre-load perl modules or configure the global perl environment.  It 
features a path mechanism for autoloading perl subroutines.  There is a
command-history mechanism, and several other useful features such as command 
preprocessing, shortcuts for commonly used commands such as "print", 
and the ability to execute arbitrary code whenever a prompt is printed.

Depending on your configuration settings, B<perldl> can be set to
honor or ignore the ^D (end-of-file) character when sent from a
terminal, or to attempt to do the Right Thing when a block construct
spanning multiple lines is encountered.

B<perldl> and B<pdl> support several command-line options, which are
discussed near the end of this document.

=head2 Reference manual & online help

The PDL reference manual and online help are available from within 
B<perldl>, using the B<help> and B<apropos> commands (which may also
be abbreviated B<?> and B<??>.)   The B<help> command alone prints a summary of
help syntax, and B<< help <module-name> >> will print POD documentation
from the module you mention (POD is the Perl format for embedding 
documentation in your perl code; see L<perlpod> for details).

If you include POD documentation in your autoload subroutines (see
B<path mechanism> below), then both B<help> and B<apropos> will find it 
and be able to format and display it on demand.

=head2 History mechanism

If you have the perl modules ReadLines and ReadKeys installed, then
B<perldl> supports a history and line-editing mechanism using editing
keys similar to L<emacs>. The last 500 commands are always stored in
the file F<.perldl_hist> in your home directory between sessions.
Set C<$PERLDL::HISTFILESIZE> to change the number of lines saved.
The command C<l [number]> shows you the last C<number> commands you
typed where C<number> defaults to 20.

e.g.:

bash$ perldl
   ReadLines enabled
   pdl> $a = rfits "foo.fits"
   BITPIX =  -32  size = 88504 pixels
   Reading  354016 bytes
   BSCALE =  &&  BZERO =

pdl> imag log($a+400)
   Displaying 299 x 296 image from 4.6939525604248 to 9.67116928100586 ...

=head2 Command execution

If you enter a simple command at the B<perldl> command line, it is
immediately executed in a Perl C<eval()>.  The environment is almost
identical to that within a perl script, with some important exceptions:

=over 3

=item * $_ is not preserved across lines

$_ is used to hold the command line for initial processing, so at the
beginning of processing of each command line, $_ contains the command itself.
Use variables other than $_ to store values across lines.

=item * Scope is not preserved across lines

Each command line is executed in a separate C<eval> block within perl,
so scoping commands such as C<my> and C<local> may not perform exactly
as expected -- in particular, if you declare a variable with C<my>, it
is local to the particular command line on which you typed the C<my>
command, which means that it will evaporate before the next prompt is printed.
(You can use C<my> variables in a multi-line block or to isolate values within 
a single command line, of course).

NOTE: pdl2 preserves lexical scope between lines.

=item * Execution is immediate

Under most circumstances, as soon as you end a line of input the line
is parsed and executed.  This breaks Perl's normal dependence on
semicolons as command delimiters.  For example, the two-line expression

print "Hello ",
     "world";

prints the phrase C<Hello world> in Perl, but (under most circumstances) 
C<Hello > in B<perldl>.

=item * Multi-line execution

In multiline mode (which is enabled by default, see B<Shell
variables>, below), B<perldl> searches for searches for block-like
constructs with curly braces, parentheses, quotes, and related
delimiters.  If you leave such a construct open, B<perldl> accepts more
lines of input until you close the construct or explictly end the multi-line
expression with ^D.   Following the example above, the phrase

{ print "Hello ",
       "world"; }

will print "Hello world" from either Perl or (in multi-line mode)
B<perldl>.

B<Warning>: The multi-line parsing uses Damian Conway's
L<Text::Balanced> module, which contains some flaws -- so it can be
fooled by quote-like operators such as C<q/.../>, included POD
documentation, multi-line C<E<lt>E<lt>> quotes, and some
particularly bizarre-but-valid C<m/.../> matches and C<s/.../.../>
substitutions.  In such cases, use ^D to close out the multi-line construct and
force compilation-and-execution.

=back

If you want to preserve this behavior in a script (for example to replay a command
journal file; see below on how to create one), you can use B<pdl> instead of B<perl>
as the interpreter in the script's initial shebang line.

=head2 Terminating C<perldl>

A C<perldl> session can be terminated with any of the commands
C<quit>, C<exit> or the shorthands C<x> or C<q>.  If EOF handling is
switched on (the default) you can also type ^D at the command prompt.

If the command input is NOT a terminal (for example if you are running
from a command journal file), then EOF will always terminate B<perldl>.

=head2 Terminating commands (Ctrl-C handling)

Commands executed within C<perldl> can be terminated prematurely
using C<Ctrl-C> (or whichever key sequence sends an INT signal
to the process on your terminal). Provided your PDL code does not
ignore C<sigint>s this should throw you back at the C<perldl>
command prompt:

pdl> $result = start_lengthy_computation()
   <Ctrl-C>
 Ctrl-C detected

pdl>

=head2 Shortcuts and aliases

=over

=item *

The shell aliases C<p> to be a convenient short form of C<print>, e.g.

pdl> p ones 5,3

[
    [1 1 1 1 1]
    [1 1 1 1 1]
    [1 1 1 1 1]
   ]

=item *

C<q> and C<x> are short-hand for C<quit>.

=item *

C<l> lists the history buffer

pdl> l # list last 20 commands

pdl> l 40 # list last 40 commands

=item *

C<?> is an alias for L<help|PDL::Doc::Perldl/help>

pdl> ? pdl2    # get help for new pdl2 shell

=item *

C<??> is an alias for L<apropos|PDL::Doc::Perldl/apropos>

pdl> ?? PDL::Doc

=item *

L<help|PDL::Doc::Perldl/help>, L<apropos|PDL::Doc::Perldl/apropos>,
L<usage|PDL::Doc::Perldl/usage> and L<sig|PDL::Doc::Perldl/sig>:
all words after these commands are used verbatim and not evaluated
by perl. So you can write, e.g.,

pdl> help help

instead of

pdl> help 'help'

=back

=head2 Command-line options

B<perldl> and B<pdl> support several command-line options to adjust the behavior of the
session.  Most of them are equivalent to commands that can be entered at the B<pdlE<gt>>
prompt.  They are:

=over 4

=item -glut

Load OpenGL when starting the shell (the perl OpenGL module,
which is available from CPAN must be installed).  This enables
readline event loop processing.  Don't use with -tk.

=item -tk

Load Tk when starting the shell (the perl Tk module, which is
available from CPAN must be installed).  This enables readline
event loop processing.  Don't use with -glut.

=item -f file

Loads the file before processing any user input. Any errors
during the execution of the file are fatal.

=item -w

Runs with warning messages (i.e. the normal perl C<-w> warnings)
turned-on.

=item -M module

Loads the module before processing any user input.
Compare corresponding C<perl> switch.

=item -m module

Unloads the module before processing any user input.

=item -I directory

Adds directory to the include path. (i.e. the @INC array)
Compare corresponding C<perl> switch.

=item -V

Prints a summary of PDL config. This information should
be included with any PDL bug report. Compare corresponding
C<perl> switch.

=back

=head2 The startup file F<~/.perldlrc>

If the file F<~/.perldlrc> is found it is sourced at start-up to load default
modules, set shell variables, etc. If it is NOT found the distribution file
F<PDL/default.perldlrc> is read instead. This loads various modules
considered useful by default, and which ensure compatibility with
v1.11. If you don't like this and want a more streamlined set of your
own favourite modules simple create your own F<~/.perldlrc>.  You may
wish to start from the existing F<PDL/default.perldlrc> as a template
since it will not be sourced once you replace it with your own version.

To set even more local defaults the file  F<local.perldlrc> (in the current
directory) is sourced if found. This lets you load modules and define
subroutines for the project in the current directory.

The name is chosen specfically because it was found hidden files were
NOT wanted in these circumstances.

The startup file should normally include "use PDL::AutoLoader;", as 
many of the nicer interactive features won't work without it.

=head2 Shell variables

Shell variables: (I<Note>: if you don't like the defaults change
them in F<~/.perldlrc>)

=over

=item *

$PERLDL::ESCAPE  - default value '#'

Any line starting with this character is treated as a shell
escape. The default value is chosen because it escapes the
code from the standard perl interpreter.

=item *

$PERLDL::HISTFILESIZE  - default value 500

This is the number of lines of perldl shell command history
to keep.

=item *

$PERLDL::PAGER - default value C<more>

External program to filter the output of commands.  Using C<more>
prints output one screenful at a time.  On Unix, setting C<page(1)>
and $PERLDL::PAGER to C<tee -a outfile> will keep a record of the
output generated by subsequent perldl commands (without paging).

=item *

$PERLDL::PROMPT - default value 'pdl> '

Enough said  But can also be set to a subroutine reference, e.g.
$PERLDL::PROMPT = sub {join(':',(gmtime)[2,1,0]).'> '} puts the
current time into the prompt.

=item *

$PERLDL::MULTI - default value 1

If this is set to a true value, then perldl will parse multi-line 
perl blocks: your input will not be executed until you finish a line
with no outstanding group operators (such as quotes, blocks, parenthesis, or 
brackets) still active.  Continuation lines have a different prompt that
shows you what delimiters are still active.

Note that this is not (yet!) a complete perl parser.  In particular,
Text::Balanced appears to be able to ignore quoting operatores 
like C<q/ ... /> within a line, but not to be able to extend them across
lines.  Likewise, there is no support for the '<<' operator.

Multiline conventional strings and {}, [], and () groupings are well
supported.

=item *

$PERLDL::NO_EOF - default value 0 / 1 on MSWin32

Protects against accidental use of "^D" from the terminal.  If this is
set to a true value, then you can't accidentally exit perldl by typing
"^D".  If you set it to a value larger than 1 (and PERLDL::MULTI is
set), then you can't use "^D" to exit multiline commands either.  If
you're piping commands in from a file or pipe, this variable has no
effect.

=item *

$HOME

The user's home directory

=item *

$PERLDL::TERM

This is the Term::ReadLine object associated with the perldl
shell. It can be used by routines called from perldl if your
command is interactive.

=item *

$PDL::toolongtoprint

The maximal size pdls to print (defaults to 10,000 elements).
This is not just a C<perldl> or C<pdl2> variable but it is
something that is usually needed in an interactive debugging
session.

=back

=head2 Executing scripts from the C<perldl> prompt

A useful idiom for developing perldl scripts or editing functions
on-line is

pdl> # emacs script &
    -- add perldl code to script and save the file
  
  pdl> do 'script'

-- substitute your favourite window-based editor for 'emacs' (you may
also need to change the '&' on non-Unix systems).

Running "do 'script'" again updates any variables and function
definitions from the current version of 'script'.

=head2 Executing perldl scripts from the command line

PDL scripts are just perl scripts that happen to use PDL (and
possibly PDL::NiceSlice).  But for the truly lazy, perldl can be
invokes as a script interpreter.  Because perldl is itself an interpreted
perl script, most unices won't allow you to say "#!/usr/bin/perldl" 
at the top of your script.

Instead, say "#!/usr/bin/pdl" and your script will be executed exactly
as if you typed it, line-by-line, into the perldl shell.

=head2 Command preprocessing

NOTE: This feature is used by default by L<PDL::NiceSlice|PDL::NiceSlice>.
See below for more about slicing at the C<perldl> prompt

In some cases, it is convenient to process commands before they are
sent to perl for execution. For example, this is the case where the
shell is being presented to people unfamiliar with perl but who wish
to take advantage of commands added locally (eg by automatically 
quoting arguments to certain commands).

*I<NOTE>*: The preprocessing interface has changed from earlier
versions! The old way using C<$PERLDL::PREPROCESS> will still
work but is strongly deprecated and might go away in the future.

You can enable preprocessing by registering a filter with the
C<preproc_add> function. C<preproc_add> takes one argument which
is the filter to be installed. A filter is a Perl code reference (usually
set in a local configuration file) that will be called, with the
current command string as argument, just prior to the string being
executed by the shell. The modified string should be returned. Note
that you can make C<perldl> completely unusable if you fail to
return the modified string; quitting is then your only option.

Filters can be removed from the preprocessing pipeline by calling
C<preproc_del> with the filter to be removed as argument.  To find out
if a filter is currently installed in the preprocessing pipeline use
C<preproc_registered>:

pdl> preproc_add $myfilter unless preproc_registered $myfilter;

Previous versions of C<perldl> used the variable C<$PERLDL::PREPROCESS>.
This will still work but should be avoided. Please change your scripts
to use the C<preproc_add> etc functions.

The following code would check for a call to function 'mysub'
and bracket arguments with qw.

$filter = preproc_add sub {
     my $str = shift;
     $str =~ s/^\s+//;  # Strip leading space
     if ($str =~ /^mysub/) {
        my ($command, $arguments) = split(/\s+/,$str, 2);
        $str = "$command qw( $arguments )" 
        if (defined $arguments && $arguments !~ /^qw/);
     };
     # Return the input string, modified as required
     return $str;
   };

This would convert:

pdl> mysub arg1 arg2

pdl> mysub qw( arg1 arg2 )

which Perl will understand as a list.  Obviously, a little more effort
is required to check for cases where the caller has supplied a normal
list (and so does not require automatic quoting) or variable
interpolation is required.

You can remove this preprocessor using the C<preproc_del> function
which takes one argument (the filter to be removed, it must be the
same coderef that was returned from a previous C<preproc_add> call):

pdl> preproc_del $filter;

An example of actual usage can be found in the C<perldl> script. Look
at the function C<trans> to see how the niceslicing preprocessor is
enabled/disabled.

=head2 C<perldl> and L<PDL::NiceSlice|PDL::NiceSlice>

L<PDL::NiceSlice|PDL::NiceSlice> introduces a more convenient
slicing syntax for piddles. In current versions of C<perldl> and
C<pdl2> niceslicing is enabled by default (if the required CPAN
modules are installed on your machine).

At startup C<perldl> will let you
know if niceslicing is enabled. The startup message will contain
info to this end, something like this:

perlDL shell v1.XX
    PDL comes with ABSOLUTELY NO WARRANTY. For details, see the file
    'COPYING' in the PDL distribution. This is free software and you
    are welcome to redistribute it under certain conditions, see
    the same file for details.
   ReadLines, NiceSlice  enabled
   Reading /home/csoelle/.perldlrc...
   Type 'demo' for online demos
   Loaded PDL v2.XX

When you get such a message that indicates C<NiceSlice> is enabled
you can use the enhanced slicing syntax:

pdl> $a = sequence 10;
  pdl> p $a(3:8:2)

For details consult L<PDL::NiceSlice>.

L<PDL::NiceSlice|PDL::NiceSlice> installs a filter in the
preprocessing pipeline (see above) to enable the enhanced slicing
syntax. You can use a few commands in the C<perldl> shell to
switch this preprocessing on or off and also explicitly check
the substitutions that the NiceSlice filter makes.

You can switch the L<PDL::NiceSlice|PDL::NiceSlice> filter on and off
by typing

pdl> trans # switch niceslicing on

and

pdl> notrans # switch niceslicing off

respectively. The filter is on by default.

To see how your commands are translated
switch reporting on:

pdl> report 1;
  pdl> p $a(3:8:2)
  processed p $a->nslice([3,8,2])
  [3 5 7]

Similarly, switch reporting off as needed

pdl> report 0;
  pdl>  p $a(3:8:2)
  [3 5 7]

Reporting is off by default.

=head2 Automatically execute your own hooks

The variable @PERLDL::AUTO is a simple list of perl code strings
and/or code reference. It is used to define code to be
executed automatically every time the user enters a new line.

A simple example would be to print the time of each command:

pdl> push @PERLDL::AUTO,'print scalar(gmtime),"\n"'
  
  pdl> print zeroes(3,3)
  Sun May  3 04:49:05 1998
  
  [
   [0 0 0]
   [0 0 0]
   [0 0 0]
  ]
  
  pdl> print "Boo"
  Sun May  3 04:49:18 1998
  Boo
  pdl>

Or to make sure any changes in the file 'local.perldlrc' are
always picked up :-

pdl> push @PERLDL::AUTO,"do 'local.perldlrc'"

This code can of course be put *in* 'local.perldlrc', but
be careful :-) [Hint: add C<unless ($started++)> to above
to ensure it only gets done once!]

Another example application is as a hook for Autoloaders
(e.g. PDL::AutoLoader) to add code too which allows them to
automatically re-scan their files for changes. This is
extremely convenient at the interactive command line. Since
this hook is only in the shell it imposes no inefficiency on
PDL scripts.

Finally note this is a very powerful facility - which means
it should be used with caution!

=cut

${this.title}

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