diff options
| -rw-r--r-- | src/scripts/xzless.in | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/scripts/xzless.in b/src/scripts/xzless.in index 93a415d7..53650ef1 100644 --- a/src/scripts/xzless.in +++ b/src/scripts/xzless.in @@ -48,7 +48,14 @@ if test "${LESSMETACHARS+set}" != set; then fi VER=$(less -V | { read _ ver _ && echo ${ver%%.*}; }) -if test "$VER" -ge 429; then +if test "$VER" -ge 451; then + # less 451 or later: If the compressed file is valid but has + # zero bytes of uncompressed data, using two vertical bars ||- makes + # "less" check the exit status of xz and if it is zero then display + # an empty file. With a single vertical bar |- and no output from xz, + # "less" would attempt to display the raw input file instead. + LESSOPEN="||-$xz -cdfqQ -- %s" +elif test "$VER" -ge 429; then # less 429 or later: LESSOPEN pipe will be used on # standard input if $LESSOPEN begins with |-. LESSOPEN="|-$xz -cdfqQ -- %s" |