Re^2: Issue with env variables set through dos batch

[Anonymous Monk]

what will happen in case batch file have values like : %VAL%=<some path>:%VAL% i you read it as a key value pair, then the values that get appended are lost

[Anonymous Monk]

what will happen in case...

It should take all of 10 seconds to find out :) Try It To See

[Athanasius]

i[f] you read it as a key value pair, then the values that get appended are lost

Not at all. The code line:

my ($k, $v) = split /=/, $_, 2;

splits each data line into two parts: the part to the left of the first = character — which is assigned to $k — and the entire part to the right of the first = character — which is assigned to $v. So nothing is lost. In your example, the batch file would contain:

set VAL=<some path>:%VAL%

and if VAL already contained, say, /bin, the result would be the assignment of VAL to $k and of <some path>:/bin to $v. See split:

If LIMIT is specified and positive, it represents the maximum number of fields into which the EXPR may be split; in other words, LIMIT is one greater than the maximum number of times EXPR may be split.

Hope that helps,