From c40f26a15c0dce60ee365ee3f6d0779ef19cd947 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Sun, 14 Feb 2016 13:44:16 -0500
Subject: Don't modify the result of getenv().

---
 color.c | 13 ++++++++++---
 color.h |  2 +-
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/color.c b/color.c
index d89be4f..f32d5a3 100644
--- a/color.c
+++ b/color.c
@@ -49,9 +49,11 @@ struct color_table {
 	const char *exec;
 
 	struct ext_color *ext_list;
+
+	char *data;
 };
 
-struct color_table *parse_colors(char *ls_colors) {
+struct color_table *parse_colors(const char *ls_colors) {
 	struct color_table *colors = malloc(sizeof(struct color_table));
 	if (!colors) {
 		goto done;
@@ -79,11 +81,15 @@ struct color_table *parse_colors(char *ls_colors) {
 	colors->exec       = "01;32";
 	colors->ext_list   = NULL;
 
-	if (!ls_colors) {
+	if (ls_colors) {
+		colors->data = strdup(ls_colors);
+	}
+
+	if (!colors->data) {
 		goto done;
 	}
 
-	char *start = ls_colors;
+	char *start = colors->data;
 	char *end;
 	struct ext_color *ext;
 	for (end = strchr(start, ':'); *start && end; start = end + 1, end = strchr(start, ':')) {
@@ -333,6 +339,7 @@ void free_colors(struct color_table *colors) {
 			free(saved);
 		}
 
+		free(colors->data);
 		free(colors);
 	}
 }
diff --git a/color.h b/color.h
index d022d34..61b71c0 100644
--- a/color.h
+++ b/color.h
@@ -26,7 +26,7 @@ struct color_table;
  *         A color table in the LS_COLORS environment variable format.
  * @return The parsed color table.
  */
-struct color_table *parse_colors(char *ls_colors);
+struct color_table *parse_colors(const char *ls_colors);
 
 /**
  * Pretty-print a file path.
-- 
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