busybox/shell/ash_test/ash-quoting/dollar_altvalue2.tests
Denys Vlasenko 83e434d5b5 hush: fix handling of '' in ${var:+ARG}
This wasn't an ash bug in dollar_altvalue9, it was hush bug (and bash!)

function                                             old     new   delta
expand_one_var                                      2236    2254     +18
expand_vars_to_list                                 1097    1103      +6
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(add/remove: 0/0 grow/shrink: 2/0 up/down: 24/0)               Total: 24 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2018-07-20 17:36:06 +02:00

34 lines
427 B
Plaintext
Executable File

f() { echo start:; for i; do echo "|$i|"; done; echo end; }
x=a
echo "Unquoted '':"
f ${x:+''}
f ${x:+'' }
f ${x:+ ''}
f ${x:+ '' }
f ${x:+'' ''}
echo
echo 'Unquoted "":'
f ${x:+""}
f ${x:+"" }
f ${x:+ ""}
f ${x:+ "" }
f ${x:+"" ""}
echo
echo "Quoted '':"
f "${x:+''}"
f "${x:+'' }"
f "${x:+ ''}"
f "${x:+ '' }"
f "${x:+'' ''}"
echo
echo 'Quoted "":'
f "${x:+""}"
f "${x:+"" }"
f "${x:+ ""}"
f "${x:+ "" }"
f "${x:+"" ""}"