!-> REPEAT: I=1
**ERROR: command syntax: II = ???
define symbol ii
Compare this line with the one in the original shell script:
ferret << STOP
. . .
define symbol ii `i`
. . .
STOP
Where did
`i` go?
In the shell script as well as in the ferret script, the backquote construct is evaluated. In the above shell script, the shell tries to run a command named "i". It fails and is replaced with an empty string. I suppose you saw this error message on your screen
. . . i: command not found
To prevent the shell from interpreting the backquote construct, you "quote" the here-document by
ferret <<'STOP'
. . .
STOP
Ryo
--------------------
To see what's going on, run this kind of test shell script
echo date
echo `date`
echo "abc `date` def"
echo 'abc `date` def'
cat <<EOF
date
`date`
EOF
cat <<'EOF'
date
`date`
EOF