diff options
Diffstat (limited to 'coreutils/tac.c')
| -rw-r--r-- | coreutils/tac.c | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/coreutils/tac.c b/coreutils/tac.c index ddadcc7bc..af70f3092 100644 --- a/coreutils/tac.c +++ b/coreutils/tac.c @@ -22,7 +22,7 @@ struct lstring { int size; - char buf[]; + char buf[1]; }; int tac_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; @@ -34,7 +34,21 @@ int tac_main(int argc ATTRIBUTE_UNUSED, char **argv) llist_t *list = NULL; int retval = EXIT_SUCCESS; +#if ENABLE_DESKTOP +/* tac from coreutils 6.9 supports: + -b, --before + attach the separator before instead of after + -r, --regex + interpret the separator as a regular expression + -s, --separator=STRING + use STRING as the separator instead of newline +We support none, but at least we will complain or handle "--": +*/ + getopt32(argv, ""); + argv += optind; +#else argv++; +#endif if (!*argv) *--argv = (char *)"-"; /* We will read from last file to first */ @@ -48,6 +62,7 @@ int tac_main(int argc ATTRIBUTE_UNUSED, char **argv) name--; f = fopen_or_warn_stdin(*name); if (f == NULL) { + /* error message is printed by fopen_or_warn_stdin */ retval = EXIT_FAILURE; continue; } @@ -61,7 +76,7 @@ int tac_main(int argc ATTRIBUTE_UNUSED, char **argv) line = xrealloc(line, i + 0x7f + sizeof(int) + 1); line->buf[i++] = ch; } - if ((ch == '\n' || ch == EOF) && i) { + if (ch == '\n' || (ch == EOF && i != 0)) { line = xrealloc(line, i + sizeof(int)); line->size = i; llist_add_to(&list, line); @@ -69,9 +84,8 @@ int tac_main(int argc ATTRIBUTE_UNUSED, char **argv) i = 0; } } while (ch != EOF); - /* fgetc sets errno to ENOENT on EOF, but */ - /* fopen_or_warn_stdin would catch this error */ - /* so we can filter it out here. */ + /* fgetc sets errno to ENOENT on EOF, we don't want + * to warn on this non-error! */ if (errno && errno != ENOENT) { bb_simple_perror_msg(*name); retval = EXIT_FAILURE; |