send-email: handle adjacent RFC 2047-encoded words properly

diff --git a/t/test-lib-functions.sh b/t/test-lib-functions.sh
index aeae3ca7699b4c828f8ebe50624b5179fb5098b8..cf7b41f66de9a0aec151d9f191fa6d4a7f62e7e6 100644 (file)
--- a/t/test-lib-functions.sh
+++ b/t/test-lib-functions.sh
@@ -32,6 +32,11 @@ test_set_editor () {
        export EDITOR
 }
 
+test_set_index_version () {
+    GIT_INDEX_VERSION="$1"
+    export GIT_INDEX_VERSION
+}
+
 test_decode_color () {
        awk '
                function name(n) {
@@ -612,6 +617,12 @@ test_cmp() {
        $GIT_TEST_CMP "$@"
 }
 
+# test_cmp_bin - helper to compare binary files
+
+test_cmp_bin() {
+       cmp "$@"
+}
+
 # Check if the file expected to be empty is indeed empty, and barfs
 # otherwise.
 
@@ -716,6 +727,64 @@ perl () {
        command "$PERL_PATH" "$@"
 }
 
+# Is the value one of the various ways to spell a boolean true/false?
+test_normalize_bool () {
+       git -c magic.variable="$1" config --bool magic.variable 2>/dev/null
+}
+
+# Given a variable $1, normalize the value of it to one of "true",
+# "false", or "auto" and store the result to it.
+#
+#     test_tristate GIT_TEST_HTTPD
+#
+# A variable set to an empty string is set to 'false'.
+# A variable set to 'false' or 'auto' keeps its value.
+# Anything else is set to 'true'.
+# An unset variable defaults to 'auto'.
+#
+# The last rule is to allow people to set the variable to an empty
+# string and export it to decline testing the particular feature
+# for versions both before and after this change.  We used to treat
+# both unset and empty variable as a signal for "do not test" and
+# took any non-empty string as "please test".
+
+test_tristate () {
+       if eval "test x\"\${$1+isset}\" = xisset"
+       then
+               # explicitly set
+               eval "
+                       case \"\$$1\" in
+                       '')     $1=false ;;
+                       auto)   ;;
+                       *)      $1=\$(test_normalize_bool \$$1 || echo true) ;;
+                       esac
+               "
+       else
+               eval "$1=auto"
+       fi
+}
+
+# Exit the test suite, either by skipping all remaining tests or by
+# exiting with an error. If "$1" is "auto", we then we assume we were
+# opportunistically trying to set up some tests and we skip. If it is
+# "true", then we report a failure.
+#
+# The error/skip message should be given by $2.
+#
+test_skip_or_die () {
+       case "$1" in
+       auto)
+               skip_all=$2
+               test_done
+               ;;
+       true)
+               error "$2"
+               ;;
+       *)
+               error "BUG: test tristate is '$1' (real error: $2)"
+       esac
+}
+
 # The following mingw_* functions obey POSIX shell syntax, but are actually
 # bash scripts, and are meant to be used only with bash on Windows.