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 "$x" -o c = d bash: test: too many arguments Signed-off-by: Elia Pinto <gitter.spi...@gmail.com> --- Inspired from this discussion http://permalink.gmane.org/gmane.comp.version-control.git/137056 contrib/examples/git-commit.sh | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/contrib/examples/git-commit.sh b/contrib/examples/git-commit.sh index 5cafe2e..934505b 100755 --- a/contrib/examples/git-commit.sh +++ b/contrib/examples/git-commit.sh @@ -51,7 +51,7 @@ run_status () { export GIT_INDEX_FILE fi - if test "$status_only" = "t" -o "$use_status_color" = "t"; then + if test "$status_only" = "t" || test "$use_status_color" = "t"; then color= else color=--nocolor @@ -296,7 +296,7 @@ t,,,[1-9]*) die "No paths with -i does not make sense." ;; esac -if test ! -z "$templatefile" -a -z "$log_given" +if test ! -z "$templatefile" && test -z "$log_given" then if test ! -f "$templatefile" then -- 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
