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-rw-r--r--Test/D01prompt.ztst13
1 files changed, 13 insertions, 0 deletions
diff --git a/Test/D01prompt.ztst b/Test/D01prompt.ztst
index 6879e6fd1..55861cca1 100644
--- a/Test/D01prompt.ztst
+++ b/Test/D01prompt.ztst
@@ -258,6 +258,19 @@
   fi
 0:Equivalence of terminal colour settings (background colour)
 
+  A1=${(%):-%s}
+  A2=${(%):-%u}
+  A3=${(%):-%s%u%s}
+  [[ $A3 = $A1$A2 ]]
+0:Attribute optimisation - preserve initial disabling of attribute but drop useless later one
+
+  : ${(%):-%K{blue}}
+  A1="${(%):-%b}x"
+  : ${(%):-%k}
+  A2="${(%):-%b}x"
+  [[ $A1 = $A2 && -n $A1 && -n $A2 ]]
+0:Don't restore attributes from earlier substitution after disabling bold
+
  (RPS1=foo; echo $RPS1 $RPROMPT)
  (RPS2=bar; echo $RPS2 $RPROMPT2)
 -fD:RPS1 and RPROMPT are aliases (regression from 5.0.6) (workers/49600)