diff --git a/Makefile b/Makefile
index fc99a6b..86b1e4a 100644
--- a/Makefile
+++ b/Makefile
@@ -49,5 +49,12 @@ output/noh.o: src/noh.h | output
 
 ################################################################################
 
+test: output/test
+output/test: test/test_path.c $(SHARED_LIB_FILES) | output
+	gcc $(CFLAGS) -I./src -o output/test test/test_path.c $(SHARED_LIBS)
+
+################################################################################
+
 output:
 	mkdir -p output
+
diff --git a/build.sh b/build.sh
index 14e49a9..b282185 100755
--- a/build.sh
+++ b/build.sh
@@ -14,6 +14,12 @@ elif [ $1 = "run" ]; then
     make server
     ./output/server 5000 ./library "Testing library"
 
+elif [ $1 = "test" ]; then
+    echo "Running tests"
+
+    make test
+    ./output/test
+
 elif [ $1 = "debug" ]; then
     echo "Debugging"
 
diff --git a/src/noh.h b/src/noh.h
index bec3710..d864aae 100644
--- a/src/noh.h
+++ b/src/noh.h
@@ -156,9 +156,21 @@ typedef enum {
     NOH_ERROR,
 } Noh_Log_Level;
 
+// Options that can alter the behavior of noh_log.
+typedef struct {
+    // Whether to write a line feed at the end of a log message. Default is true.
+    bool write_lf;
+
+    // Whether to write a line feed at the end of a log message. Default is true.
+    bool write_prefix;
+} Noh_Log_Options;
+
 // Writes a formatted log message to stderr with the provided log level.
 void noh_log(Noh_Log_Level level, const char *fmt, ...);
 
+// Returns a pointer to the noh_log options.
+Noh_Log_Options *noh_log_get_opts();
+
 ///////////////////////// Dynamic array /////////////////////////
 
 #define NOH_DA_INIT_CAP 256
@@ -609,27 +621,36 @@ void noh_time_add(struct timespec *time, int seconds, long milliseconds) {
 
 ///////////////////////// Logging /////////////////////////
 
+Noh_Log_Options *noh_log_get_opts() {
+    static Noh_Log_Options opts = { .write_lf = true, .write_prefix = true, };
+    return &opts;
+}
+
 void noh_log(Noh_Log_Level level, const char *fmt, ...)
 {
-    switch (level) {
-        case NOH_INFO:
-            fprintf(stderr, "[INFO] ");
-            break;
-        case NOH_WARNING:
-            fprintf(stderr, "[WARNING] ");
-            break;
-        case NOH_ERROR:
-            fprintf(stderr, "[ERROR] ");
-            break;
-        default:
-            noh_assert(false && "Invalid log level");
+    Noh_Log_Options *opts = noh_log_get_opts();
+
+    if (opts->write_prefix) {
+        switch (level) {
+            case NOH_INFO:
+                fprintf(stderr, "[INFO] ");
+                break;
+            case NOH_WARNING:
+                fprintf(stderr, "[WARNING] ");
+                break;
+            case NOH_ERROR:
+                fprintf(stderr, "[ERROR] ");
+                break;
+            default:
+                noh_assert(false && "Invalid log level");
+        }
     }
 
     va_list args;
     va_start(args, fmt);
     vfprintf(stderr, fmt, args);
     va_end(args);
-    fprintf(stderr, "\n");
+    if (opts->write_lf) fprintf(stderr, "\n");
 }
 
 ///////////////////////// Arena /////////////////////////
diff --git a/src/path.c b/src/path.c
index 5c7095e..01ed3fb 100644
--- a/src/path.c
+++ b/src/path.c
@@ -3,7 +3,7 @@
 static inline bool byte_is_url_safe(char c) {
     return (c >= 'A' && c <= 'Z')
         || (c >= 'a' && c <= 'z')
-        || (c >= '0' && c <+ '9')
+        || (c >= '0' && c <= '9')
         || (c >= '(' && c <= '*')
         || c == '!' || c == '-'
         || c == '.' || c == '_';
@@ -15,12 +15,12 @@ static bool needs_encoding(Noh_String string, int *unsafe_count) {
     *unsafe_count = 0;
     bool safe = true ;
     for (size_t i = 0; i < string.count; i++) {
-        bool needs_encode = byte_is_url_safe(string.elems[i]);
+        bool needs_encode = !byte_is_url_safe(string.elems[i]);
         if (needs_encode || string.elems[i] == ' ') safe = false;
         if (needs_encode) (*unsafe_count)++;
     }
 
-    return safe;
+    return !safe;
 }
 
 static inline char to_char_lower(int value) {
@@ -55,6 +55,8 @@ void url_encode(Noh_String *string) {
             noh_da_append(&result, '%');
             noh_da_append(&result, to_char_lower(cur >> 4));
             noh_da_append(&result, to_char_lower(cur));
+        } else {
+            noh_da_append(&result, cur);
         }
     }
 
diff --git a/test/test_path.c b/test/test_path.c
new file mode 100644
index 0000000..4686868
--- /dev/null
+++ b/test/test_path.c
@@ -0,0 +1,52 @@
+#include <stdio.h>
+
+#include "path.h"
+#include "noh.h"
+
+void check_string(size_t *good, size_t *bad, const char* input, const char *expected) {
+    Noh_String test = noh_string_from_cstr(input);
+    Noh_String_View expected_sv = noh_sv_from_cstr(expected);
+
+    Noh_Log_Options *opts = noh_log_get_opts();
+
+    opts->write_lf = false;
+    noh_log(NOH_INFO, "Testing: \"%s\"...", input);
+    opts->write_lf = true;
+    opts->write_prefix = false;
+
+    url_encode(&test);
+    bool correct = noh_sv_eq(noh_sv_from_string(test), expected_sv);
+
+    if (!correct) {
+        noh_log(NOH_ERROR, " Incorrect.");
+        opts->write_prefix = true;
+        noh_log(NOH_ERROR, "Expected: "Nsv_Fmt, Nsv_Arg(expected_sv));
+        noh_log(NOH_ERROR, "Got     : "Nsv_Fmt, Nsv_Arg(test));
+        (*bad)++;
+    } else {
+        noh_log(NOH_INFO, " Ok.");
+        opts->write_prefix = true;
+        (*good)++;
+    }
+}
+
+int main() {
+    size_t good = 0;
+    size_t bad = 0;
+
+    check_string(&good, &bad,
+        "abcdefghijklmnopqrstuvwxyz1023456789ABCDEFGHIJKLMNOPQRSTUVWXYZ()*!-._",
+        "abcdefghijklmnopqrstuvwxyz1023456789ABCDEFGHIJKLMNOPQRSTUVWXYZ()*!-._");
+
+    check_string(&good, &bad,
+        "~!@#$%^&*()_+-=",
+        "%7e!%40%23%24%25%5e%26*()_%2b-%3d");
+
+    if (bad == 0) {
+        noh_log(NOH_INFO, "%zu/%zu tests passed.", good, good);
+        return 0;
+    } else {
+        noh_log(NOH_ERROR, "%zu/%zu tests passed. %zu failures.", good, good + bad, bad);
+        return 1;
+    }
+}