diff --git a/spec/libsass-todo-issues/issue_1889/expected.compact.css b/spec/libsass-todo-issues/issue_1889/expected.compact.css
new file mode 100644
index 0000000000..19a6ad0a9d
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1889/expected.compact.css
@@ -0,0 +1,2 @@
+@media (min-width: 640px) { /* comment */ }
+@media (min-width: 320px) { div { /* comment */ } }
diff --git a/spec/libsass-todo-issues/issue_1889/expected.compressed.css b/spec/libsass-todo-issues/issue_1889/expected.compressed.css
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/spec/libsass-todo-issues/issue_1889/expected.expanded.css b/spec/libsass-todo-issues/issue_1889/expected.expanded.css
new file mode 100644
index 0000000000..4c54d60685
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1889/expected.expanded.css
@@ -0,0 +1,8 @@
+@media (min-width: 640px) {
+  /* comment */
+}
+@media (min-width: 320px) {
+  div {
+    /* comment */
+  }
+}
diff --git a/spec/libsass-todo-issues/issue_1889/expected_output.css b/spec/libsass-todo-issues/issue_1889/expected_output.css
new file mode 100644
index 0000000000..323cc62361
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1889/expected_output.css
@@ -0,0 +1,5 @@
+@media (min-width: 640px) {
+  /* comment */ }
+@media (min-width: 320px) {
+  div {
+    /* comment */ } }
diff --git a/spec/libsass-todo-issues/issue_1889/input.scss b/spec/libsass-todo-issues/issue_1889/input.scss
new file mode 100644
index 0000000000..88babcd40d
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1889/input.scss
@@ -0,0 +1,9 @@
+@media (min-width: 640px) { 
+  /* comment */
+}
+
+div {
+  @media (min-width: 320px) { 
+    /* comment */
+  }
+}
\ No newline at end of file
diff --git a/spec/libsass-todo-issues/issue_1890/expected.compact.css b/spec/libsass-todo-issues/issue_1890/expected.compact.css
new file mode 100644
index 0000000000..bc13f9271d
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1890/expected.compact.css
@@ -0,0 +1,2 @@
+@media (min-width: 480px) { .wrap { display: block; } }
+.wrap .box { display: inline-block; }
diff --git a/spec/libsass-todo-issues/issue_1890/expected.compressed.css b/spec/libsass-todo-issues/issue_1890/expected.compressed.css
new file mode 100644
index 0000000000..a596018671
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1890/expected.compressed.css
@@ -0,0 +1 @@
+@media (min-width: 480px){.wrap{display:block}}.wrap .box{display:inline-block}
diff --git a/spec/libsass-todo-issues/issue_1890/expected.expanded.css b/spec/libsass-todo-issues/issue_1890/expected.expanded.css
new file mode 100644
index 0000000000..ec7669e8ec
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1890/expected.expanded.css
@@ -0,0 +1,8 @@
+@media (min-width: 480px) {
+  .wrap {
+    display: block;
+  }
+}
+.wrap .box {
+  display: inline-block;
+}
diff --git a/spec/libsass-todo-issues/issue_1890/expected_output.css b/spec/libsass-todo-issues/issue_1890/expected_output.css
new file mode 100644
index 0000000000..03aceea848
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1890/expected_output.css
@@ -0,0 +1,5 @@
+@media (min-width: 480px) {
+  .wrap {
+    display: block; } }
+  .wrap .box {
+    display: inline-block; }
diff --git a/spec/libsass-todo-issues/issue_1890/input.scss b/spec/libsass-todo-issues/issue_1890/input.scss
new file mode 100644
index 0000000000..779f25c371
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1890/input.scss
@@ -0,0 +1,10 @@
+.wrap {
+  @media (min-width: 480px) { 
+    display: block;
+    @at-root (without: media){ 
+      .box { 
+        display: inline-block;
+      }
+    } 
+  }
+}
\ No newline at end of file
diff --git a/spec/libsass-todo-issues/issue_1898/expected.compact.css b/spec/libsass-todo-issues/issue_1898/expected.compact.css
new file mode 100644
index 0000000000..19a6ad0a9d
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1898/expected.compact.css
@@ -0,0 +1,2 @@
+@media (min-width: 640px) { /* comment */ }
+@media (min-width: 320px) { div { /* comment */ } }
diff --git a/spec/libsass-todo-issues/issue_1898/expected.compressed.css b/spec/libsass-todo-issues/issue_1898/expected.compressed.css
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/spec/libsass-todo-issues/issue_1898/expected.expanded.css b/spec/libsass-todo-issues/issue_1898/expected.expanded.css
new file mode 100644
index 0000000000..4c54d60685
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1898/expected.expanded.css
@@ -0,0 +1,8 @@
+@media (min-width: 640px) {
+  /* comment */
+}
+@media (min-width: 320px) {
+  div {
+    /* comment */
+  }
+}
diff --git a/spec/libsass-todo-issues/issue_1898/expected_output.css b/spec/libsass-todo-issues/issue_1898/expected_output.css
new file mode 100644
index 0000000000..323cc62361
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1898/expected_output.css
@@ -0,0 +1,5 @@
+@media (min-width: 640px) {
+  /* comment */ }
+@media (min-width: 320px) {
+  div {
+    /* comment */ } }
diff --git a/spec/libsass-todo-issues/issue_1898/input.scss b/spec/libsass-todo-issues/issue_1898/input.scss
new file mode 100644
index 0000000000..88babcd40d
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1898/input.scss
@@ -0,0 +1,9 @@
+@media (min-width: 640px) { 
+  /* comment */
+}
+
+div {
+  @media (min-width: 320px) { 
+    /* comment */
+  }
+}
\ No newline at end of file
diff --git a/spec/libsass-todo-issues/issue_1926/expected.compact.css b/spec/libsass-todo-issues/issue_1926/expected.compact.css
new file mode 100644
index 0000000000..8961ae3b02
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1926/expected.compact.css
@@ -0,0 +1,32 @@
+.grid [class*="one wide"] { width: 6.25%; }
+.grid[class*="one column"] > .column:not(.row), .grid .row[class*="one column"] > .column:not(.row) { width: 6.25% !important; }
+.grid [class*="two wide"] { width: 12.5%; }
+.grid[class*="two column"] > .column:not(.row), .grid .row[class*="two column"] > .column:not(.row) { width: 12.5% !important; }
+.grid [class*="three wide"] { width: 18.75%; }
+.grid[class*="three column"] > .column:not(.row), .grid .row[class*="three column"] > .column:not(.row) { width: 18.75% !important; }
+.grid [class*="four wide"] { width: 25%; }
+.grid[class*="four column"] > .column:not(.row), .grid .row[class*="four column"] > .column:not(.row) { width: 25% !important; }
+.grid [class*="five wide"] { width: 31.25%; }
+.grid[class*="five column"] > .column:not(.row), .grid .row[class*="five column"] > .column:not(.row) { width: 31.25% !important; }
+.grid [class*="six wide"] { width: 37.5%; }
+.grid[class*="six column"] > .column:not(.row), .grid .row[class*="six column"] > .column:not(.row) { width: 37.5% !important; }
+.grid [class*="seven wide"] { width: 43.75%; }
+.grid[class*="seven column"] > .column:not(.row), .grid .row[class*="seven column"] > .column:not(.row) { width: 43.75% !important; }
+.grid [class*="eight wide"] { width: 50%; }
+.grid[class*="eight column"] > .column:not(.row), .grid .row[class*="eight column"] > .column:not(.row) { width: 50% !important; }
+.grid [class*="nine wide"] { width: 56.25%; }
+.grid[class*="nine column"] > .column:not(.row), .grid .row[class*="nine column"] > .column:not(.row) { width: 56.25% !important; }
+.grid [class*="ten wide"] { width: 62.5%; }
+.grid[class*="ten column"] > .column:not(.row), .grid .row[class*="ten column"] > .column:not(.row) { width: 62.5% !important; }
+.grid [class*="eleven wide"] { width: 68.75%; }
+.grid[class*="eleven column"] > .column:not(.row), .grid .row[class*="eleven column"] > .column:not(.row) { width: 68.75% !important; }
+.grid [class*="twelve wide"] { width: 75%; }
+.grid[class*="twelve column"] > .column:not(.row), .grid .row[class*="twelve column"] > .column:not(.row) { width: 75% !important; }
+.grid [class*="thirteen wide"] { width: 81.25%; }
+.grid[class*="thirteen column"] > .column:not(.row), .grid .row[class*="thirteen column"] > .column:not(.row) { width: 81.25% !important; }
+.grid [class*="fourteen wide"] { width: 87.5%; }
+.grid[class*="fourteen column"] > .column:not(.row), .grid .row[class*="fourteen column"] > .column:not(.row) { width: 87.5% !important; }
+.grid [class*="fifteen wide"] { width: 93.75%; }
+.grid[class*="fifteen column"] > .column:not(.row), .grid .row[class*="fifteen column"] > .column:not(.row) { width: 93.75% !important; }
+.grid [class*="sixteen wide"] { width: 100%; }
+.grid[class*="sixteen column"] > .column:not(.row), .grid .row[class*="sixteen column"] > .column:not(.row) { width: 100% !important; }
diff --git a/spec/libsass-todo-issues/issue_1926/expected.compressed.css b/spec/libsass-todo-issues/issue_1926/expected.compressed.css
new file mode 100644
index 0000000000..3491a5e85e
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1926/expected.compressed.css
@@ -0,0 +1 @@
+.grid [class*="one wide"]{width:6.25%}.grid[class*="one column"]>.column:not(.row),.grid .row[class*="one column"]>.column:not(.row){width:6.25% !important}.grid [class*="two wide"]{width:12.5%}.grid[class*="two column"]>.column:not(.row),.grid .row[class*="two column"]>.column:not(.row){width:12.5% !important}.grid [class*="three wide"]{width:18.75%}.grid[class*="three column"]>.column:not(.row),.grid .row[class*="three column"]>.column:not(.row){width:18.75% !important}.grid [class*="four wide"]{width:25%}.grid[class*="four column"]>.column:not(.row),.grid .row[class*="four column"]>.column:not(.row){width:25% !important}.grid [class*="five wide"]{width:31.25%}.grid[class*="five column"]>.column:not(.row),.grid .row[class*="five column"]>.column:not(.row){width:31.25% !important}.grid [class*="six wide"]{width:37.5%}.grid[class*="six column"]>.column:not(.row),.grid .row[class*="six column"]>.column:not(.row){width:37.5% !important}.grid [class*="seven wide"]{width:43.75%}.grid[class*="seven column"]>.column:not(.row),.grid .row[class*="seven column"]>.column:not(.row){width:43.75% !important}.grid [class*="eight wide"]{width:50%}.grid[class*="eight column"]>.column:not(.row),.grid .row[class*="eight column"]>.column:not(.row){width:50% !important}.grid [class*="nine wide"]{width:56.25%}.grid[class*="nine column"]>.column:not(.row),.grid .row[class*="nine column"]>.column:not(.row){width:56.25% !important}.grid [class*="ten wide"]{width:62.5%}.grid[class*="ten column"]>.column:not(.row),.grid .row[class*="ten column"]>.column:not(.row){width:62.5% !important}.grid [class*="eleven wide"]{width:68.75%}.grid[class*="eleven column"]>.column:not(.row),.grid .row[class*="eleven column"]>.column:not(.row){width:68.75% !important}.grid [class*="twelve wide"]{width:75%}.grid[class*="twelve column"]>.column:not(.row),.grid .row[class*="twelve column"]>.column:not(.row){width:75% !important}.grid [class*="thirteen wide"]{width:81.25%}.grid[class*="thirteen column"]>.column:not(.row),.grid .row[class*="thirteen column"]>.column:not(.row){width:81.25% !important}.grid [class*="fourteen wide"]{width:87.5%}.grid[class*="fourteen column"]>.column:not(.row),.grid .row[class*="fourteen column"]>.column:not(.row){width:87.5% !important}.grid [class*="fifteen wide"]{width:93.75%}.grid[class*="fifteen column"]>.column:not(.row),.grid .row[class*="fifteen column"]>.column:not(.row){width:93.75% !important}.grid [class*="sixteen wide"]{width:100%}.grid[class*="sixteen column"]>.column:not(.row),.grid .row[class*="sixteen column"]>.column:not(.row){width:100% !important}
diff --git a/spec/libsass-todo-issues/issue_1926/expected.expanded.css b/spec/libsass-todo-issues/issue_1926/expected.expanded.css
new file mode 100644
index 0000000000..f5012d4971
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1926/expected.expanded.css
@@ -0,0 +1,96 @@
+.grid [class*="one wide"] {
+  width: 6.25%;
+}
+.grid[class*="one column"] > .column:not(.row), .grid .row[class*="one column"] > .column:not(.row) {
+  width: 6.25% !important;
+}
+.grid [class*="two wide"] {
+  width: 12.5%;
+}
+.grid[class*="two column"] > .column:not(.row), .grid .row[class*="two column"] > .column:not(.row) {
+  width: 12.5% !important;
+}
+.grid [class*="three wide"] {
+  width: 18.75%;
+}
+.grid[class*="three column"] > .column:not(.row), .grid .row[class*="three column"] > .column:not(.row) {
+  width: 18.75% !important;
+}
+.grid [class*="four wide"] {
+  width: 25%;
+}
+.grid[class*="four column"] > .column:not(.row), .grid .row[class*="four column"] > .column:not(.row) {
+  width: 25% !important;
+}
+.grid [class*="five wide"] {
+  width: 31.25%;
+}
+.grid[class*="five column"] > .column:not(.row), .grid .row[class*="five column"] > .column:not(.row) {
+  width: 31.25% !important;
+}
+.grid [class*="six wide"] {
+  width: 37.5%;
+}
+.grid[class*="six column"] > .column:not(.row), .grid .row[class*="six column"] > .column:not(.row) {
+  width: 37.5% !important;
+}
+.grid [class*="seven wide"] {
+  width: 43.75%;
+}
+.grid[class*="seven column"] > .column:not(.row), .grid .row[class*="seven column"] > .column:not(.row) {
+  width: 43.75% !important;
+}
+.grid [class*="eight wide"] {
+  width: 50%;
+}
+.grid[class*="eight column"] > .column:not(.row), .grid .row[class*="eight column"] > .column:not(.row) {
+  width: 50% !important;
+}
+.grid [class*="nine wide"] {
+  width: 56.25%;
+}
+.grid[class*="nine column"] > .column:not(.row), .grid .row[class*="nine column"] > .column:not(.row) {
+  width: 56.25% !important;
+}
+.grid [class*="ten wide"] {
+  width: 62.5%;
+}
+.grid[class*="ten column"] > .column:not(.row), .grid .row[class*="ten column"] > .column:not(.row) {
+  width: 62.5% !important;
+}
+.grid [class*="eleven wide"] {
+  width: 68.75%;
+}
+.grid[class*="eleven column"] > .column:not(.row), .grid .row[class*="eleven column"] > .column:not(.row) {
+  width: 68.75% !important;
+}
+.grid [class*="twelve wide"] {
+  width: 75%;
+}
+.grid[class*="twelve column"] > .column:not(.row), .grid .row[class*="twelve column"] > .column:not(.row) {
+  width: 75% !important;
+}
+.grid [class*="thirteen wide"] {
+  width: 81.25%;
+}
+.grid[class*="thirteen column"] > .column:not(.row), .grid .row[class*="thirteen column"] > .column:not(.row) {
+  width: 81.25% !important;
+}
+.grid [class*="fourteen wide"] {
+  width: 87.5%;
+}
+.grid[class*="fourteen column"] > .column:not(.row), .grid .row[class*="fourteen column"] > .column:not(.row) {
+  width: 87.5% !important;
+}
+.grid [class*="fifteen wide"] {
+  width: 93.75%;
+}
+.grid[class*="fifteen column"] > .column:not(.row), .grid .row[class*="fifteen column"] > .column:not(.row) {
+  width: 93.75% !important;
+}
+.grid [class*="sixteen wide"] {
+  width: 100%;
+}
+.grid[class*="sixteen column"] > .column:not(.row), .grid .row[class*="sixteen column"] > .column:not(.row) {
+  width: 100% !important;
+}
diff --git a/spec/libsass-todo-issues/issue_1926/expected_output.css b/spec/libsass-todo-issues/issue_1926/expected_output.css
new file mode 100644
index 0000000000..fd5633e4eb
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1926/expected_output.css
@@ -0,0 +1,64 @@
+.grid [class*="one wide"] {
+  width: 6.25%; }
+.grid[class*="one column"] > .column:not(.row), .grid .row[class*="one column"] > .column:not(.row) {
+  width: 6.25% !important; }
+.grid [class*="two wide"] {
+  width: 12.5%; }
+.grid[class*="two column"] > .column:not(.row), .grid .row[class*="two column"] > .column:not(.row) {
+  width: 12.5% !important; }
+.grid [class*="three wide"] {
+  width: 18.75%; }
+.grid[class*="three column"] > .column:not(.row), .grid .row[class*="three column"] > .column:not(.row) {
+  width: 18.75% !important; }
+.grid [class*="four wide"] {
+  width: 25%; }
+.grid[class*="four column"] > .column:not(.row), .grid .row[class*="four column"] > .column:not(.row) {
+  width: 25% !important; }
+.grid [class*="five wide"] {
+  width: 31.25%; }
+.grid[class*="five column"] > .column:not(.row), .grid .row[class*="five column"] > .column:not(.row) {
+  width: 31.25% !important; }
+.grid [class*="six wide"] {
+  width: 37.5%; }
+.grid[class*="six column"] > .column:not(.row), .grid .row[class*="six column"] > .column:not(.row) {
+  width: 37.5% !important; }
+.grid [class*="seven wide"] {
+  width: 43.75%; }
+.grid[class*="seven column"] > .column:not(.row), .grid .row[class*="seven column"] > .column:not(.row) {
+  width: 43.75% !important; }
+.grid [class*="eight wide"] {
+  width: 50%; }
+.grid[class*="eight column"] > .column:not(.row), .grid .row[class*="eight column"] > .column:not(.row) {
+  width: 50% !important; }
+.grid [class*="nine wide"] {
+  width: 56.25%; }
+.grid[class*="nine column"] > .column:not(.row), .grid .row[class*="nine column"] > .column:not(.row) {
+  width: 56.25% !important; }
+.grid [class*="ten wide"] {
+  width: 62.5%; }
+.grid[class*="ten column"] > .column:not(.row), .grid .row[class*="ten column"] > .column:not(.row) {
+  width: 62.5% !important; }
+.grid [class*="eleven wide"] {
+  width: 68.75%; }
+.grid[class*="eleven column"] > .column:not(.row), .grid .row[class*="eleven column"] > .column:not(.row) {
+  width: 68.75% !important; }
+.grid [class*="twelve wide"] {
+  width: 75%; }
+.grid[class*="twelve column"] > .column:not(.row), .grid .row[class*="twelve column"] > .column:not(.row) {
+  width: 75% !important; }
+.grid [class*="thirteen wide"] {
+  width: 81.25%; }
+.grid[class*="thirteen column"] > .column:not(.row), .grid .row[class*="thirteen column"] > .column:not(.row) {
+  width: 81.25% !important; }
+.grid [class*="fourteen wide"] {
+  width: 87.5%; }
+.grid[class*="fourteen column"] > .column:not(.row), .grid .row[class*="fourteen column"] > .column:not(.row) {
+  width: 87.5% !important; }
+.grid [class*="fifteen wide"] {
+  width: 93.75%; }
+.grid[class*="fifteen column"] > .column:not(.row), .grid .row[class*="fifteen column"] > .column:not(.row) {
+  width: 93.75% !important; }
+.grid [class*="sixteen wide"] {
+  width: 100%; }
+.grid[class*="sixteen column"] > .column:not(.row), .grid .row[class*="sixteen column"] > .column:not(.row) {
+  width: 100% !important; }
diff --git a/spec/libsass-todo-issues/issue_1926/input.sass b/spec/libsass-todo-issues/issue_1926/input.sass
new file mode 100644
index 0000000000..ad81d633e3
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1926/input.sass
@@ -0,0 +1,17 @@
+// The amount of the column of a single row.
+$columnAmount: 16
+
+// The name of the each column size.
+$columnName  : one two three four five six seven eight nine ten eleven twelve thirteen fourteen fifteen sixteen
+
+=column-generator
+  @for $i from 1 through $columnAmount
+    [class*="#{nth($columnName, $i)} wide"]
+      width: 100% / $columnAmount * $i 
+
+    &[class*="#{nth($columnName, $i)} column"], & .row[class*="#{nth($columnName, $i)} column"]
+      > .column:not(.row)
+        width  : 100% / $columnAmount * $i !important
+
+.grid
+  +column-generator
\ No newline at end of file
diff --git a/spec/libsass-todo-issues/issue_1931/expected.compact.css b/spec/libsass-todo-issues/issue_1931/expected.compact.css
new file mode 100644
index 0000000000..552bedb88d
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1931/expected.compact.css
@@ -0,0 +1 @@
+body { background-image: url(http://test.com); }
diff --git a/spec/libsass-todo-issues/issue_1931/expected.compressed.css b/spec/libsass-todo-issues/issue_1931/expected.compressed.css
new file mode 100644
index 0000000000..9a8976f86c
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1931/expected.compressed.css
@@ -0,0 +1 @@
+body{background-image:url(http://test.com)}
diff --git a/spec/libsass-todo-issues/issue_1931/expected.expanded.css b/spec/libsass-todo-issues/issue_1931/expected.expanded.css
new file mode 100644
index 0000000000..2e2fe2ea1b
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1931/expected.expanded.css
@@ -0,0 +1,3 @@
+body {
+  background-image: url(http://test.com);
+}
diff --git a/spec/libsass-todo-issues/issue_1931/expected_output.css b/spec/libsass-todo-issues/issue_1931/expected_output.css
new file mode 100644
index 0000000000..28aaf845d7
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1931/expected_output.css
@@ -0,0 +1,2 @@
+body {
+  background-image: url(http://test.com); }
diff --git a/spec/libsass-todo-issues/issue_1931/input.scss b/spec/libsass-todo-issues/issue_1931/input.scss
new file mode 100644
index 0000000000..049aac8558
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1931/input.scss
@@ -0,0 +1,4 @@
+$var: 'http://test.com';
+body {
+  background-image: url( #{$var});
+}
\ No newline at end of file
diff --git a/spec/libsass-todo-issues/issue_1960/expected.compact.css b/spec/libsass-todo-issues/issue_1960/expected.compact.css
new file mode 100644
index 0000000000..3b872ae312
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1960/expected.compact.css
@@ -0,0 +1,2 @@
+foo:not(.missing):not(bar) { a: b; }
+foo:not(.missing):not(bar):hover { c: d; }
diff --git a/spec/libsass-todo-issues/issue_1960/expected.compressed.css b/spec/libsass-todo-issues/issue_1960/expected.compressed.css
new file mode 100644
index 0000000000..569d60f77b
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1960/expected.compressed.css
@@ -0,0 +1 @@
+foo:not(.missing):not(bar){a:b}foo:not(.missing):not(bar):hover{c:d}
diff --git a/spec/libsass-todo-issues/issue_1960/expected.expanded.css b/spec/libsass-todo-issues/issue_1960/expected.expanded.css
new file mode 100644
index 0000000000..47e6680db1
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1960/expected.expanded.css
@@ -0,0 +1,6 @@
+foo:not(.missing):not(bar) {
+  a: b;
+}
+foo:not(.missing):not(bar):hover {
+  c: d;
+}
diff --git a/spec/libsass-todo-issues/issue_1960/expected_output.css b/spec/libsass-todo-issues/issue_1960/expected_output.css
new file mode 100644
index 0000000000..67deada075
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1960/expected_output.css
@@ -0,0 +1,4 @@
+foo:not(.missing):not(bar) {
+  a: b; }
+  foo:not(.missing):not(bar):hover {
+    c: d; }
diff --git a/spec/libsass-todo-issues/issue_1960/input.scss b/spec/libsass-todo-issues/issue_1960/input.scss
new file mode 100644
index 0000000000..dee3d485c5
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1960/input.scss
@@ -0,0 +1,9 @@
+foo:not(.missing) {
+  a: b;
+
+  &:hover { c: d; }
+}
+
+bar {
+  @extend .missing;
+}
\ No newline at end of file
diff --git a/spec/libsass-todo-issues/issue_1969/expected.compact.css b/spec/libsass-todo-issues/issue_1969/expected.compact.css
new file mode 100644
index 0000000000..efa5361473
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1969/expected.compact.css
@@ -0,0 +1 @@
+.test_class { color: #999999; }
diff --git a/spec/libsass-todo-issues/issue_1969/expected.compressed.css b/spec/libsass-todo-issues/issue_1969/expected.compressed.css
new file mode 100644
index 0000000000..cfec037415
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1969/expected.compressed.css
@@ -0,0 +1 @@
+.test_class{color:#999}
diff --git a/spec/libsass-todo-issues/issue_1969/expected.expanded.css b/spec/libsass-todo-issues/issue_1969/expected.expanded.css
new file mode 100644
index 0000000000..f882a9822d
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1969/expected.expanded.css
@@ -0,0 +1,3 @@
+.test_class {
+  color: #999999;
+}
diff --git a/spec/libsass-todo-issues/issue_1969/expected_output.css b/spec/libsass-todo-issues/issue_1969/expected_output.css
new file mode 100644
index 0000000000..b30e89141c
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1969/expected_output.css
@@ -0,0 +1,2 @@
+.test_class {
+  color: #999999; }
diff --git a/spec/libsass-todo-issues/issue_1969/input.scss b/spec/libsass-todo-issues/issue_1969/input.scss
new file mode 100644
index 0000000000..55ca8c3f0d
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1969/input.scss
@@ -0,0 +1,11 @@
+$base-text-color: #666;
+
+@function calcNavbarTextColor ($base-text-color) {
+        @return $base-text-color;
+}
+
+$header-text-color: calcNavbarTextColor($base-text-color);
+
+.test_class {
+        color: lighten($header-text-color, 20%);
+}
\ No newline at end of file
diff --git a/spec/libsass-todo-issues/issue_1977/expected.compact.css b/spec/libsass-todo-issues/issue_1977/expected.compact.css
new file mode 100644
index 0000000000..b4c39f50a0
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1977/expected.compact.css
@@ -0,0 +1,4 @@
+@charset "UTF-8";
+body#some-\(selector\) { color: red; }
+
+#äöü { color: reds; }
diff --git a/spec/libsass-todo-issues/issue_1977/expected.compressed.css b/spec/libsass-todo-issues/issue_1977/expected.compressed.css
new file mode 100644
index 0000000000..8a840df878
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1977/expected.compressed.css
@@ -0,0 +1 @@
+body#some-\(selector\){color:red}#äöü{color:reds}
diff --git a/spec/libsass-todo-issues/issue_1977/expected.expanded.css b/spec/libsass-todo-issues/issue_1977/expected.expanded.css
new file mode 100644
index 0000000000..d226556fdc
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1977/expected.expanded.css
@@ -0,0 +1,8 @@
+@charset "UTF-8";
+body#some-\(selector\) {
+  color: red;
+}
+
+#äöü {
+  color: reds;
+}
diff --git a/spec/libsass-todo-issues/issue_1977/expected_output.css b/spec/libsass-todo-issues/issue_1977/expected_output.css
new file mode 100644
index 0000000000..4cd533b921
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1977/expected_output.css
@@ -0,0 +1,6 @@
+@charset "UTF-8";
+body#some-\(selector\) {
+  color: red; }
+
+#äöü {
+  color: reds; }
diff --git a/spec/libsass-todo-issues/issue_1977/input.scss b/spec/libsass-todo-issues/issue_1977/input.scss
new file mode 100644
index 0000000000..49f2cd8ad8
--- /dev/null
+++ b/spec/libsass-todo-issues/issue_1977/input.scss
@@ -0,0 +1,7 @@
+body#some-\(selector\) {
+color: red;
+}
+
+#äöü  {
+  color: reds;
+}
\ No newline at end of file