Fix indentation bug with multi-line CSS values

* lisp/textmodes/css-mode.el (css-smie-rules): Fix indentation of
multi-line CSS values that are separated by spaces.

* test/manual/indent/css-mode.css: Add a test case for the fix.

2 files changed, 4 insertions, 1 deletions

diff --git a/lisp/textmodes/css-mode.el b/lisp/textmodes/css-mode.el
index 7e997ac2c0f..6bd08f59190 100644
--- a/lisp/textmodes/css-mode.el
+++ b/lisp/textmodes/css-mode.el
@@ -1215,7 +1215,8 @@ for determining whether point is within a selector."
   (pcase (cons kind token)
     (`(:elem . basic) css-indent-offset)
     (`(:elem . arg) 0)
-    (`(:list-intro . ,(or `";" `"")) t) ;"" stands for BOB (bug#15467).
+    ;; "" stands for BOB (bug#15467).
+    (`(:list-intro . ,(or `";" `"" `":-property")) t)
     (`(:before . "{")
      (when (or (smie-rule-hanging-p) (smie-rule-bolp))
        (smie-backward-sexp ";")
diff --git a/test/manual/indent/css-mode.css b/test/manual/indent/css-mode.css
index 640418b022d..ecf6c3c0ca5 100644
--- a/test/manual/indent/css-mode.css
+++ b/test/manual/indent/css-mode.css
@@ -56,6 +56,8 @@ div::before {
           sans-serif;
     font: 15px "Helvetica Neue", Helvetica, Arial,
           "Nimbus Sans L", sans-serif;
+    background: no-repeat right
+                5px center;
     transform: matrix(1.0, 2.0,
                       3.0, 4.0,
                       5.0, 6.0);