swaynag: don't drop \n for first line

1 files changed, 4 insertions, 8 deletions

diff --git a/swaynag/config.c b/swaynag/config.c
index 80c5ad88..d6c5739d 100644
--- a/swaynag/config.c
+++ b/swaynag/config.c
@@ -19,18 +19,14 @@ static char *read_from_stdin() {
                         continue;
                 }
 
-                if (!buffer) {
-                        buffer = strdup(line);
-                } else {
-                        buffer = realloc(buffer, strlen(buffer) + strlen(line) + 2);
-                        strcat(buffer, line);
-                        strcat(buffer, "\n");
-                }
+                size_t curlen = buffer ? strlen(buffer) : 0;
+                buffer = realloc(buffer, curlen + strlen(line) + 2);
+                snprintf(buffer + curlen, strlen(line) + 2, "%s\n", line);
 
                 free(line);
         }
 
-        if (buffer && buffer[strlen(buffer) - 1] == '\n') {
+        while (buffer && buffer[strlen(buffer) - 1] == '\n') {
                 buffer[strlen(buffer) - 1] = '\0';
         }