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diff --git a/test/slicer.cc b/test/slicer.cc
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+++ b/test/slicer.cc
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+/**
+ * Copyright (c) 2007-2012, Timothy Stack
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * * Neither the name of Timothy Stack nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string>
+#include <vector>
+
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "line_buffer.hh"
+
+using namespace std;
+
+int
+main(int argc, char* argv[])
+{
+    int retval = EXIT_SUCCESS;
+    vector<file_range> index;
+    auto_fd fd;
+
+    if (argc < 2) {
+        fprintf(stderr, "error: expecting file argument\n");
+        retval = EXIT_FAILURE;
+    } else if ((fd = open(argv[1], O_RDONLY)) == -1) {
+        perror("open");
+        retval = EXIT_FAILURE;
+    } else {
+        int line_number, start, end;
+        line_buffer lb;
+        file_range range;
+
+        lb.set_fd(fd);
+        while (true) {
+            auto load_result = lb.load_next_line(range);
+
+            if (load_result.isErr()) {
+                return EXIT_FAILURE;
+            }
+
+            auto li = load_result.unwrap();
+
+            if (li.li_file_range.empty()) {
+                break;
+            }
+
+            index.emplace_back(li.li_file_range);
+
+            range = li.li_file_range;
+        }
+
+        try {
+            while (scanf("%d:%d:%d", &line_number, &start, &end) == 3) {
+                range = index[line_number];
+                auto read_result = lb.read_range(range);
+
+                if (read_result.isErr()) {
+                    return EXIT_FAILURE;
+                }
+
+                auto str = to_string(read_result.unwrap());
+
+                str = str.substr(start, end - start);
+                printf("%s\n", str.c_str());
+            }
+        } catch (line_buffer::error& e) {
+            fprintf(stderr, "error: line buffer %s\n", strerror(e.e_err));
+        }
+    }
+    return retval;
+}