On the curious behaviour of variables!

[menski]

Given that I have the folloiwing chunk of program:

BEGIN {
FS = ":"
print "\n AWKSEARCH - Start:
for (i=2; i < ARGC; i++) {
if (ARGV == &quot;-d&quot {disponly = &quot;y&quot;}
else if (ARGV == &quot;-f&quot {fileonly = &quot;y&quot;}
else if (ARGV == &quot;-r&quot {recurse = &quot;y&quot;}
else if (ARGV == &quot;-s&quot {recurse = &quot;n&quot;}

else if (ARGV == &quot;-x&quot {
exc == &quot;&quot; ? exc = ARGV[i+1] :
exc = exc &quot;:&quot; ARGV[i+1]
++i
}
else if (ARGV == &quot;-i&quot {
inc == &quot;&quot; ? inc = ARGV[i+1] :
inc = inc &quot;:&quot; ARGV[i+1]
++i
}
else if (ARGV == &quot;-t&quot {
txt == &quot;&quot; ? txt = ARGV[i+1] :
txt = txt &quot;:&quot; ARGV[i+1]
++i
}
}

for (i = 2; i < ARGC; i++) delete ARGV
if (disponly == &quot;y&quot exit
if (txt == &quot;&quot; && fileonly != &quot;y&quot exit

if (exc != &quot;&quot {
$0 = exc
print &quot; $0exc: &quot;$0
for (x = 1; x <= NF; x++) {
exclude[x] = $x
print &quot; exclude&quot;x&quot;: &quot;exclude[x]
}
exc = &quot;&quot;
print &quot;x = &quot;x

if (inc != &quot;&quot {
$0 = inc
print &quot; $0inc: &quot;$0
for (d = 1; d <= NF; d++) {
include[d] = $d
print &quot; include&quot;d&quot;: &quot;include[d]
}
inc = &quot;&quot;
print &quot;d = &quot;d

if (txt != &quot;&quot {
$0 = txt
print &quot; $0txt: &quot;$0
for (t = 1; t <= NF; t++) {
text[t] = $t
print &quot; text&quot;t&quot;: &quot;text[t]
}
txt = &quot;&quot;
print &quot;t = &quot;t

exit

Why is the output of:

> awk -f awksearch dummy -x awk1X1 -t duncan2T1 -x ferret2X3 -i mess4I1 -i pottage5I2 -x soup6x3 -t duck7T2
As follows:

$0exc: awk1X1:ferret2X3:soup6x3
exclude1: awk1X1
exclude2: ferret2X3
exclude3: soup6x3
x = 4
$0inc: mess4I1ottage5I2
include1: awk1X1
include2: ferret2X3
d = 3
$0txt: duncan2T1:duck7T2
text1: duncan2T1
text2: duck 7T2
t = 3

Am I missing something terribly obvious?

dmk

 

[CaKiwi]

Uncheck the Process TGML box and resubmit your posting. The was taken to to mean turn on italics. CaKiwi

 

[menski]

Sorry abot that: this should look OK.

BEGIN {
FS = &quot;:&quot;
print &quot;\n AWKSEARCH - Start:

for (i=2; i < ARGC; i++) {
if (ARGV == &quot;-d&quot {disponly = &quot;y&quot;}
else if (ARGV == &quot;-f&quot {fileonly = &quot;y&quot;}
else if (ARGV == &quot;-r&quot {recurse = &quot;y&quot;}
else if (ARGV == &quot;-s&quot {recurse = &quot;n&quot;}

else if (ARGV == &quot;-x&quot {
exc == &quot;&quot; ? exc = ARGV[i+1] :
exc = exc &quot;:&quot; ARGV[i+1]
++i
}
else if (ARGV == &quot;-i&quot {
inc == &quot;&quot; ? inc = ARGV[i+1] :
inc = inc &quot;:&quot; ARGV[i+1]
++i
}
else if (ARGV == &quot;-t&quot {
txt == &quot;&quot; ? txt = ARGV[i+1] :
txt = txt &quot;:&quot; ARGV[i+1]
++i
}
}

for (i = 2; i < ARGC; i++) delete ARGV
if (disponly == &quot;y&quot exit
if (txt == &quot;&quot; && fileonly != &quot;y&quot exit

if (exc != &quot;&quot {
$0 = exc
print &quot; $0exc: &quot;$0
for (x = 1; x <= NF; x++) {
exclude[x] = $x
print &quot; exclude&quot;x&quot;: &quot;exclude[x]
}
exc = &quot;&quot;
print &quot;x = &quot;x
}
if (inc != &quot;&quot {
$0 = inc
print &quot; $0inc: &quot;$0
for (d = 1; d <= NF; d++) {
include[d] = $d
print &quot; include&quot;d&quot;: &quot;include[d]
}
inc = &quot;&quot;
print &quot;d = &quot;d
}
if (txt != &quot;&quot {
$0 = txt
print &quot; $0txt: &quot;$0
for (t = 1; t <= NF; t++) {
text[t] = $t
print &quot; text&quot;t&quot;: &quot;text[t]
}
txt = &quot;&quot;
print &quot;t = &quot;t
}
exit

Why is the output of:

> awk -f awksearch dummy -x awk1X1 -t duncan2T1 -x ferret2X3 -i mess4I1 -i pottage5I2 -x soup6x3 -t duck7T2
As follows:

$0exc: awk1X1:ferret2X3:soup6x3
exclude1: awk1X1
exclude2: ferret2X3
exclude3: soup6x3
x = 4
$0inc: mess4I1ottage5I2
include1: awk1X1
include2: ferret2X3
d = 3
$0txt: duncan2T1:duck7T2
text1: duncan2T1
text2: duck 7T2
t = 3

Am I missing something terribly obvious?

dmk