Why $1 not work in cygwin?

[niry]

perl -e "while(<>) { print $1 if(/^F MEASURE:\s+([0-9\.]+)$/); }"
with input:
F MEASURE: 0.9343

but the output is:
F MEASURE: 0.9343
not what I expect:
0.9343

and this script did well on my windows and linux, except cygwin

 

[Bart Lateur]

perl -e "while(<>) { print $1 if(/^F MEASURE:\s+([0-9\.]+)$/); }"
with input:
F MEASURE: 0.9343

but the output is:
F MEASURE: 0.9343
not what I expect:
0.9343

and this script did well on my windows and linux, except cygwin

But, what shell are you using? I think you're having a shell escape
issue.