t/shelltest.od: Add a new preliminary test for IFS= behaviour.

Apparently in zsh (when in sh compatibility mode), IFS=/ will split "/a/b/c/" into 5 parts ("", "a", "b", "c", ""). Other shells all seem to agree that it's 4 parts ("", "a", "b", "c"). zsh seems maybe more correct to me, but the majority rules, so we'll warn on it. Meanwhile, we'll also fix the one place in minimal/do that failed due to this oddity, since it's relatively easy to avoid. Reported-by: [email protected]
apenwarr · Jul 24, 2019 · b08b5ef · b08b5ef
1 parent 262d272
commit b08b5ef
Show file tree

Hide file tree

Showing 2 changed files with 10 additions and 1 deletion.
diff --git a/minimal/do b/minimal/do
@@ -196,7 +196,7 @@ _normpath()
 	fi
 	set -f
 	IFS=/
-	for d in $path; do
+	for d in ${path%/}; do
 		#echo "NP out='$out' d='$d'" >&2
 		if [ "$d" = ".." ]; then
 			out=$(_updir "${out%/}")/

diff --git a/t/shelltest.od b/t/shelltest.od
@@ -46,6 +46,15 @@ quiet_stderr()
 	fi
 }
 
+(
+	x="/a/b/c/"
+	IFS=/
+	f() {
+		[ "$2" = "a" ] || fail 2
+		[ "$#" = "4" ] || warn 2a
+	}
+	f $x
+)
 
 name=foo.o.o
 ext=.o