diff --git a/runtime/syntax/testdir/dumps/vim_expr_00.dump b/runtime/syntax/testdir/dumps/vim_expr_00.dump
index 899b73c..b8ea410 100644
--- a/runtime/syntax/testdir/dumps/vim_expr_00.dump
+++ b/runtime/syntax/testdir/dumps/vim_expr_00.dump
@@ -1,6 +1,6 @@
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diff --git a/runtime/syntax/testdir/dumps/vim_expr_01.dump b/runtime/syntax/testdir/dumps/vim_expr_01.dump
index 81a4e21..7dfc6d4 100644
--- a/runtime/syntax/testdir/dumps/vim_expr_01.dump
+++ b/runtime/syntax/testdir/dumps/vim_expr_01.dump
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diff --git a/runtime/syntax/testdir/dumps/vim_expr_02.dump b/runtime/syntax/testdir/dumps/vim_expr_02.dump
index d1d443e..37e5b04 100644
--- a/runtime/syntax/testdir/dumps/vim_expr_02.dump
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diff --git a/runtime/syntax/testdir/dumps/vim_expr_03.dump b/runtime/syntax/testdir/dumps/vim_expr_03.dump
index 90cd8c8..178468d 100644
--- a/runtime/syntax/testdir/dumps/vim_expr_03.dump
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index b7737c6..1a054e6 100644
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-@75
-|"+0#0000e05&| |I|s@1|u|e| |#|1|6|2@1|1| |(|v|i|m|S|t|r|i|n|g| |b|e|c|o|m|e|s| |v|i|m|V|a|r| |w|h|e|n| |p|r|e|c|e|d|e|d| |b|y| |!|)| +0#0000000&@14
-|l+0#af5f00255&|e|t| +0#0000000&|b+0#00e0e07&|a|r| +0#0000000&|=+0#af5f00255&| +0#0000000&|!+0#af5f00255&|'+0#e000002&|g|:|b|a|r|'|-+0#af5f00255&|>|e+0#00e0e07&|x|i|s|t|s|(+0#e000e06&|)| +0#0000000&@46
-@75
-|~+0#4040ff13&| @73
-|~| @73
-|~| @73
-|~| @73
-|~| @73
-| +0#0000000&@56|6|9|,|1| @9|B|o|t| 
+@57|6|8|,|1| @9|8|6|%| 
diff --git a/runtime/syntax/testdir/dumps/vim_expr_05.dump b/runtime/syntax/testdir/dumps/vim_expr_05.dump
new file mode 100644
index 0000000..2c0a189
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_expr_05.dump
@@ -0,0 +1,20 @@
+| +0&#ffffff0@74
+|"+0#0000e05&| |B|l|o|b| +0#0000000&@68
+|e+0#af5f00255&|c|h|o| +0#0000000&|0+0#e000002&|z| +0#0000000&@67
+|e+0#af5f00255&|c|h|o| +0#0000000&|0+0#e000002&|z|F@1|0@1|E|D|0|1|5|D|A|F| +0#0000000&@55
+|e+0#af5f00255&|c|h|o| +0#0000000&|0+0#e000002&|z|F@1|0@1|.|E|D|0|1|.|5|D|A|F| +0#0000000&@53
+>e+0#af5f00255&|c|h|o| +0#0000000&|0+0#e000002&|z|F@1|.|0@1|.|E|D|.|0|1|.|5|D|.|A|F| +0#0000000&@50
+@75
+@75
+|"+0#0000e05&| |I|s@1|u|e| |#|1|6|2@1|1| |(|v|i|m|S|t|r|i|n|g| |b|e|c|o|m|e|s| |v|i|m|V|a|r| |w|h|e|n| |p|r|e|c|e|d|e|d| |b|y| |!|)| +0#0000000&@14
+|l+0#af5f00255&|e|t| +0#0000000&|b+0#00e0e07&|a|r| +0#0000000&|=+0#af5f00255&| +0#0000000&|!+0#af5f00255&|'+0#e000002&|g|:|b|a|r|'|-+0#af5f00255&|>|e+0#00e0e07&|x|i|s|t|s|(+0#e000e06&|)| +0#0000000&@46
+@75
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+| +0#0000000&@56|8|6|,|1| @9|B|o|t| 
diff --git a/runtime/syntax/testdir/input/vim_expr.vim b/runtime/syntax/testdir/input/vim_expr.vim
index 8d30656..316f462 100644
--- a/runtime/syntax/testdir/input/vim_expr.vim
+++ b/runtime/syntax/testdir/input/vim_expr.vim
@@ -21,6 +21,15 @@
 echo "\<C->>>"
 echo "\<*C->>>"
 
+echo ''''
+echo '''foo'
+echo 'foo'''
+echo 'foo''bar'
+
+" Unreported issue (incorrectly matches as vimString vimMark vimOper NONE)
+" https://github.com/tpope/vim-unimpaired/blob/6d44a6dc2ec34607c41ec78acf81657248580bf1/plugin/unimpaired.vim#L232
+let cmd = 'put!=repeat(nr2char(10), v:count1)|silent '']+'
+
 " String interpolation
 
 echo 'Don''t highlight interpolation: {{ {1 + 2} }}'
@@ -30,6 +39,11 @@
 echo $"Highlight interpolation:\t{{ { string({"foo": "bar"}) } }}"
 echo $"Highlight interpolation:\t{{ { $"nested: {{ {1 + 2} }}" } }}"
 
+echo $''''
+echo $'''foo'
+echo $'foo'''
+echo $'foo''bar'
+
 " Number
 
 " Hexadecimal