Fix non-mutated vars

src/Previewer.zig

@@ -28,7 +28,7 @@ pub fn init(allocator: Allocator, loop: *Loop, cmd: []const u8, arg: []const u8)
     const shell = process.getEnvVarOwned(allocator, "SHELL") catch "/bin/sh";
 
     var iter = std.mem.tokenizeSequence(u8, cmd, "{}");
-    var cmd_parts = [2][]const u8{
+    const cmd_parts = [2][]const u8{
         iter.next() orelse cmd,
         iter.next() orelse "",
     };

src/clib.zig

@@ -124,7 +124,7 @@ export fn highlightToken(
     const string = std.mem.span(str);
     const name = if (filename != null) std.mem.span(filename) else null;
     const tok = std.mem.span(token);
-    var matches_slice = matches[0..matches_len];
+    const matches_slice = matches[0..matches_len];
     const matched = filter.highlightToken(string, name, tok, case_sensitive, strict_path, matches_slice);
     return matched.len;
 }

src/filter.zig

@@ -36,7 +36,7 @@ pub fn collectCandidates(allocator: std.mem.Allocator, buf: []const u8, delimite
 }
 
 test "collectCandidates whitespace" {
-    var candidates = try collectCandidates(testing.allocator, "first second third fourth", ' ');
+    const candidates = try collectCandidates(testing.allocator, "first second third fourth", ' ');
     defer testing.allocator.free(candidates);
 
     try testing.expectEqual(@as(usize, 4), candidates.len);
@@ -47,7 +47,7 @@ test "collectCandidates whitespace" {
 }
 
 test "collectCandidates newline" {
-    var candidates = try collectCandidates(testing.allocator, "first\nsecond\nthird\nfourth", '\n');
+    const candidates = try collectCandidates(testing.allocator, "first\nsecond\nthird\nfourth", '\n');
     defer testing.allocator.free(candidates);
 
     try testing.expectEqual(@as(usize, 4), candidates.len);
@@ -58,7 +58,7 @@ test "collectCandidates newline" {
 }
 
 test "collectCandidates excess whitespace" {
-    var candidates = try collectCandidates(testing.allocator, "   first second   third fourth   ", ' ');
+    const candidates = try collectCandidates(testing.allocator, "   first second   third fourth   ", ' ');
     defer testing.allocator.free(candidates);
 
     try testing.expectEqual(@as(usize, 4), candidates.len);
@@ -612,7 +612,7 @@ fn testRankCandidates(
     candidates: []const []const u8,
     expected: []const []const u8,
 ) !void {
-    var ranked_buf = try testing.allocator.alloc(Candidate, candidates.len);
+    const ranked_buf = try testing.allocator.alloc(Candidate, candidates.len);
     defer testing.allocator.free(ranked_buf);
     const ranked = rankCandidates(ranked_buf, candidates, tokens, false, false, false);
 

src/main.zig

@@ -49,16 +49,16 @@ pub fn main() anyerror!void {
         }
     };
 
-    var candidates = try filter.collectCandidates(allocator, buf, delimiter);
+    const candidates = try filter.collectCandidates(allocator, buf, delimiter);
     if (candidates.len == 0) std.process.exit(1);
 
     if (config.filter) |query| {
         // Use the heap here rather than an array on the stack. Testing showed that this is actually
         // faster, likely due to locality with other heap-alloced data used in the algorithm.
-        var tokens_buf = try allocator.alloc([]const u8, 16);
+        const tokens_buf = try allocator.alloc([]const u8, 16);
         const tokens = ui.splitQuery(tokens_buf, query);
         const case_sensitive = ui.hasUpper(query);
-        var filtered_buf = try allocator.alloc(filter.Candidate, candidates.len);
+        const filtered_buf = try allocator.alloc(filter.Candidate, candidates.len);
         const filtered = filter.rankCandidates(filtered_buf, candidates, tokens, config.keep_order, config.plain, case_sensitive);
         if (filtered.len == 0) std.process.exit(1);
         for (filtered) |candidate| {
@@ -82,7 +82,7 @@ pub fn main() anyerror!void {
         } else |_| .cyan;
 
         var terminal = try Terminal.init(highlight_color, no_color);
-        var selected = ui.run(
+        const selected = ui.run(
             allocator,
             &terminal,
             normalizer,

src/term.zig

@@ -69,7 +69,7 @@ pub const Terminal = struct {
         var tty = try std.fs.openFileAbsolute("/dev/tty", .{ .mode = .read_write });
 
         // store original terminal settings to restore later
-        var termios = try std.os.tcgetattr(tty.handle);
+        const termios = try std.os.tcgetattr(tty.handle);
         var raw_termios = termios;
 
         raw_termios.iflag &= ~@as(u32, c.ICRNL);

src/ui.zig

@@ -381,7 +381,7 @@ pub fn run(
         }
         break :blk try filtered.toOwnedSlice();
     };
-    var filtered_buf = try allocator.alloc(Candidate, candidates.len);
+    const filtered_buf = try allocator.alloc(Candidate, candidates.len);
 
     var state = State{
         .max_height = height,
@@ -393,7 +393,7 @@ pub fn run(
         .query = EditBuffer.init(allocator),
     };
 
-    var tokens_buf = try allocator.alloc([]const u8, 16);
+    const tokens_buf = try allocator.alloc([]const u8, 16);
     var tokens = splitQuery(tokens_buf, state.query.slice());
 
     var loop = try Loop.init(terminal.tty.handle);