[hackers] [PATCH] tar: if first argument doesn't have a leading dash, prepend one

[Ethan Sommer]

this allows tar to be called in the common form "tar <key>" instead of only
allowing "tar -<key>"
---
 tar.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tar.c b/tar.c
index 603e544..759402e 100644
--- a/tar.c
+++ b/tar.c
@@ -520,6 +520,12 @@ main(int argc, char *argv[])
        char *file = NULL, *dir = ".", mode = '\0';
        int fd;
 
+       if (argc >= 2 && argv[1][0] != '-') {
+               char *argv1 = emalloc(strlen(argv[1] + 2));
+               sprintf(argv1, "-%s", argv[1]);
+               argv[1] = argv1;
+       }
+
        ARGBEGIN {
        case 'x':
        case 'c':
-- 
2.24.1