bug#52888:

["André Silva" <andre.beat@gmail.com>]

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FWIW the patch included in emacs-28.0.91 seems to lead to a regression for
me where the incorrect font is used in certain cases or maybe just some
font attributes are not applied (e.g. in the modeline). The attached patch
fixes the problem for me.

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diff --git a/src/font.c b/src/font.c
index 56a921da9..64dd12abc 100644
--- a/src/font.c
+++ b/src/font.c
@@ -2751,9 +2751,9 @@ font_delete_unmatched (Lisp_Object vec, Lisp_Object spec, int size)
 	}
       for (prop = FONT_WEIGHT_INDEX; prop < FONT_SIZE_INDEX; prop++)
 	if (FIXNUMP (AREF (spec, prop))
-	    && ! (FIXNUMP (AREF (entity, prop))
-		  && ((XFIXNUM (AREF (spec, prop)) >> 8)
-		      == (XFIXNUM (AREF (entity, prop)) >> 8))))
+	    && FIXNUMP (AREF (entity, prop))
+	    && ((XFIXNUM (AREF (spec, prop)) >> 8)
+		!= (XFIXNUM (AREF (entity, prop)) >> 8)))
 	  prop = FONT_SPEC_MAX;
       if (prop < FONT_SPEC_MAX
 	  && size