From f117343477e596937bdfcf0ddce447c0d127b9cf Mon Sep 17 00:00:00 2001
From: Stefan Zabka <zabkaste@hu-berlin.de>
Date: Wed, 20 May 2020 21:13:35 +0200
Subject: Fixed another edge case and documentation

---
 02_exercise/prompt_utils.c      | 4 +++-
 02_exercise/prompt_utils.h      | 2 +-
 02_exercise/prompt_utils_test.c | 1 +
 02_exercise/prompt_utils_test.h | 4 ++--
 02_exercise/shell.c             | 1 +
 5 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/02_exercise/prompt_utils.c b/02_exercise/prompt_utils.c
index 819509d..4f86811 100644
--- a/02_exercise/prompt_utils.c
+++ b/02_exercise/prompt_utils.c
@@ -64,7 +64,9 @@ char const *const relative_path(char const *const from_dir, char const *const to
         for (size_t j = 0; j < levels_up - 1; j++) {
             strcat(return_value, go_up);
         }
-        strcat(return_value, to_dir + common_position);
+        if (strcmp("/", to_dir) != 0) {
+            strcat(return_value, to_dir + common_position);
+        }
     }
 
     arrayRelease((void *)from_dir_indeces);
diff --git a/02_exercise/prompt_utils.h b/02_exercise/prompt_utils.h
index 93de502..908019c 100644
--- a/02_exercise/prompt_utils.h
+++ b/02_exercise/prompt_utils.h
@@ -6,6 +6,6 @@
 // Returns the relative path to get from the `from_dir` to the `to_dir`
 char const *const relative_path(char const *const from_dir, char const *const to_dir);
 
-// Returns the position of each element one after the seperator
+// Returns the position of each occurence of the seperator
 size_t *get_seperator_indeces(char const *const text, char seperator);
 #endif // PROMPT_UTILS_H_INCLUDED
\ No newline at end of file
diff --git a/02_exercise/prompt_utils_test.c b/02_exercise/prompt_utils_test.c
index b26ce6f..f648275 100644
--- a/02_exercise/prompt_utils_test.c
+++ b/02_exercise/prompt_utils_test.c
@@ -33,4 +33,5 @@ void test_relative_path() {
     test_paths("/Test/b/c", "/Test/b", "..");
     test_paths("/", "/Test/a/asd", "./Test/a/asd");
     test_paths("/Test/c", "/Test/b", "../b");
+    test_paths("/B/C", "/", "../..");
 }
\ No newline at end of file
diff --git a/02_exercise/prompt_utils_test.h b/02_exercise/prompt_utils_test.h
index 5c637b2..fbaabde 100644
--- a/02_exercise/prompt_utils_test.h
+++ b/02_exercise/prompt_utils_test.h
@@ -1,5 +1,5 @@
-#ifndef PROMPT_UTILS_H_INCLUDED
-#define PROMPT_UTILS_H_INCLUDED
+#ifndef PROMPT_UTILS_TEST_H_INCLUDED
+#define PROMPT_UTILS_TEST_H_INCLUDED
 void test_get_seperator_indeces();
 void test_relative_path();
 
diff --git a/02_exercise/shell.c b/02_exercise/shell.c
index c0c51e1..d155a58 100644
--- a/02_exercise/shell.c
+++ b/02_exercise/shell.c
@@ -20,6 +20,7 @@ void print_prompt(char const *const original_wd, char const *current_wd);
 int exec_command(char *command);
 
 int main(void) {
+
     char const *const original_wd = get_current_dir_name();
     char const *prompt = relative_path(original_wd, original_wd);
     printf("%s \n", original_wd);
-- 
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