1 files changed, 17 insertions, 0 deletions
diff --git a/lib/getmountlist.c b/lib/getmountlist.c
index 4fec41b7..8fb43dc9 100644
--- a/lib/getmountlist.c
+++ b/lib/getmountlist.c
@@ -6,6 +6,23 @@
 #include "toys.h"
 #include <mntent.h>
 
+// Traverse arg_list of csv, calling callback on each value
+void comma_args(struct arg_list *al, void *data, char *err,
+  char *(*callback)(void *data, char *str, int len))
+{
+  char *next, *arg;
+  int len;
+
+  while (al) {
+    arg = al->arg;
+    while ((next = comma_iterate(&arg, &len)))
+      if ((next = callback(data, next, len)))
+        perror_exit("%s '%s'\n%*c", err, al->arg,
+          (int)(5+strlen(toys.which->name)+strlen(err)+next-al->arg), '^');
+    al = al->next;
+  }
+}
+
 // Realloc *old with oldstring,newstring
 
 void comma_collate(char **old, char *new)