Adding upstream version 2.25.15.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

test/bashisms/functions.sh

@@ -0,0 +1,66 @@
+#!/bin/sh
+
+foo() {
+    :
+}
+
+_all_good () {
+    :
+}
+
+_all_good101_ ( ) {
+    :
+}
+
+function BASHISM() {
+    :
+}
+
+function BASHISM {
+    :
+}
+
+function BASHISM {
+    echo foo
+} &>/dev/null # BASHISM
+
+,() { # BASHISM
+    :
+}
+
+function foo:bar:BASHISM { # BASHISMS
+    :
+}
+
+function foo-bar-BASHISM() { # BASHISMS
+    :
+}
+
+foo-bar-BASHISM ( ) {
+    :
+}
+
+_ () {
+    :
+}
+
+function _ { #BASHISM
+    :
+}
+
+=() { #BASHISM
+    :
+}
+
+function BASHISM=() { #BASHISMS
+    :
+}
+
+function BASHISM= { #BASHISMS
+    :
+}
+
+# This doesn't work:
+#foo=() {
+#    :
+#}