busybox

lineedit: code shrink

function                                             old     new   delta
collapse_pos                                           -      77     +77
read_line_input                                     4755    4757      +2
add_quote_for_spec_chars                              75      71      -4
find_match                                          1283     892    -391

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>