diff --git a/lib/std/ascii.zig b/lib/std/ascii.zig
index 37cb1e461c..102be18bec 100644
--- a/lib/std/ascii.zig
+++ b/lib/std/ascii.zig
@@ -259,7 +259,7 @@ test "allocUpperString" {
     std.testing.expect(std.mem.eql(u8, "ABCDEFGHIJKLMNOPQRST0234+💩!", result));
 }
 
-/// Return `true` if `a` and `b` are equal, case insensitive.
+/// Compares strings `a` and `b` case insensitively and returns whether they are equal.
 pub fn eqlIgnoreCase(a: []const u8, b: []const u8) bool {
     if (a.len != b.len) return false;
     for (a) |a_c, i| {
@@ -274,43 +274,20 @@ test "eqlIgnoreCase" {
     std.testing.expect(!eqlIgnoreCase("hElLo!", "helro!"));
 }
 
-/// Return `true` if `a` and `b` are equal, case sensitive.
-pub fn eqlMatchCase(a: []const u8, b: []const u8) bool {
-    if (a.len != b.len) return false;
-    for (a) |a_c, i| {
-        if (a_c != b[i]) return false;
-    }
-    return true;
-}
-
-test "eqlMatchCase" {
-    std.testing.expect(!eqlMatchCase("HEl💩Lo!", "hel💩lo!"));
-    std.testing.expect(eqlMatchCase("Hello! ", "Hello! "));
-    std.testing.expect(eqlMatchCase("hElLo!", "hElLo!"));
-}
-
-fn indexOfPos(container: []const u8, start_index: usize, substr: []const u8, comptime case_sensitive: bool) ?usize {
+/// Finds `substr` in `container`, ignoring case, starting at `start_index`.
+/// TODO boyer-moore algorithm
+pub fn indexOfIgnoreCasePos(container: []const u8, start_index: usize, substr: []const u8) ?usize {
     if (substr.len > container.len) return null;
 
     var i: usize = start_index;
     const end = container.len - substr.len;
     while (i <= end) : (i += 1) {
-        if (case_sensitive) {
-            if (eqlMatchCase(container[i .. i + substr.len], substr)) return i;
-        } else {
-            if (eqlIgnoreCase(container[i .. i + substr.len], substr)) return i;
-        }
+        if (eqlIgnoreCase(container[i .. i + substr.len], substr)) return i;
     }
     return null;
 }
 
-/// Finds `substr` in `container`, case insensitive, starting at `start_index`.
-/// TODO boyer-moore algorithm
-pub fn indexOfIgnoreCasePos(container: []const u8, start_index: usize, substr: []const u8) ?usize {
-    return indexOfPos(container, start_index, substr, false);
-}
-
-/// Finds `substr` in `container`, case insensitive, starting at index 0.
+/// Finds `substr` in `container`, ignoring case, starting at index 0.
 pub fn indexOfIgnoreCase(container: []const u8, substr: []const u8) ?usize {
     return indexOfIgnoreCasePos(container, 0, substr);
 }
@@ -323,22 +300,3 @@ test "indexOfIgnoreCase" {
 
     std.testing.expect(indexOfIgnoreCase("FOO foo", "fOo").? == 0);
 }
-
-/// Finds `substr` in `container`, case sensitive, starting at `start_index`.
-pub fn indexOfMatchCasePos(container: []const u8, start_index: usize, substr: []const u8) ?usize {
-    return indexOfPos(container, start_index, substr, true);
-}
-
-/// Finds `substr` in `container`, case sensitive, starting at index 0.
-pub fn indexOfMatchCase(container: []const u8, substr: []const u8) ?usize {
-    return indexOfMatchCasePos(container, 0, substr);
-}
-
-test "indexOfMatchCase" {
-    std.testing.expect(indexOfMatchCase("one Two Three Four", "Four").? == 14);
-    std.testing.expect(indexOfMatchCase("one two three FouR", "fOur") == null);
-    std.testing.expect(indexOfMatchCase("foO", "foO").? == 0);
-    std.testing.expect(indexOfMatchCase("foo", "fool") == null);
-
-    std.testing.expect(indexOfMatchCase("FOO foo", "FOO").? == 0);
-}