Even though POSIX.1 lists -a/-o as options to "test", they are marked "Obsolescent XSI". Scripts using these expressions should be converted as follow:
test "$1" -a "$2" should be written as: test "$1" && test "$2" Likewise test "$1" -o "$2" should be written as: test "$1" test "$2" But note that, in test, -a has higher precedence than -o while "&&" and "||" have equal precedence in the shell. The reason for this is that the precedence rules were never well specified, and this made many sane-looking uses of "test -a/-o" problematic. For example, if $x is "=", these work according to POSIX (it's not portable, but in practice it's okay): $ test -z "$x" $ test -z "$x" && test a = b but this doesn't $ test -z "$x" -a a = b bash: test: too many arguments because it groups "test -n = -a" and is left with "a = b". Similarly, if $x is "-f", these $ test "$x" $ test "$x" || test c = d correctly adds an implicit "-n", but this fails: $ test "$x" -o c = d bash: test: too many arguments Signed-off-by: Elia Pinto <gitter.spi...@gmail.com> --- Inspired from this discussion http://permalink.gmane.org/gmane.comp.version-control.git/137056 contrib/examples/git-merge.sh | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/contrib/examples/git-merge.sh b/contrib/examples/git-merge.sh index 7e40f40..52f2aaf 100755 --- a/contrib/examples/git-merge.sh +++ b/contrib/examples/git-merge.sh @@ -161,7 +161,7 @@ merge_name () { return fi fi - if test "$remote" = "FETCH_HEAD" -a -r "$GIT_DIR/FETCH_HEAD" + if test "$remote" = "FETCH_HEAD" && test -r "$GIT_DIR/FETCH_HEAD" then sed -e 's/ not-for-merge / /' -e 1q \ "$GIT_DIR/FETCH_HEAD" @@ -527,7 +527,7 @@ do git diff-files --name-only git ls-files --unmerged } | wc -l` - if test $best_cnt -le 0 -o $cnt -le $best_cnt + if test $best_cnt -le 0 || test $cnt -le $best_cnt then best_strategy=$strategy best_cnt=$cnt -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
