Several operations default to all packages/repos/etc if no targets are provided. If a user provides '-' they almost certainly expect there to be targets on stdin and will be surprised if pacman falls back to the default because there are none. Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com> --- src/pacman/pacman.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/src/pacman/pacman.c b/src/pacman/pacman.c index 921331c..7aa0271 100644 --- a/src/pacman/pacman.c +++ b/src/pacman/pacman.c @@ -826,6 +826,7 @@ int main(int argc, char *argv[]) /* we support reading targets from stdin if a cmdline parameter is '-' */ if(alpm_list_find_str(pm_targets, "-")) { if(!isatty(fileno(stdin))) { + int target_found = 0; size_t current_size = PATH_MAX; char *vdata, *line = malloc(current_size); @@ -840,6 +841,7 @@ int main(int argc, char *argv[]) if(i > 0) { line[i] = '\0'; pm_targets = alpm_list_add(pm_targets, strdup(line)); + target_found = 1; i = 0; } } else { @@ -869,12 +871,18 @@ int main(int argc, char *argv[]) if(i > 0) { line[i] = '\0'; pm_targets = alpm_list_add(pm_targets, strdup(line)); + target_found = 1; } free(line); if(!freopen(ctermid(NULL), "r", stdin)) { pm_printf(ALPM_LOG_ERROR, _("failed to reopen stdin for reading: (%s)\n"), strerror(errno)); } + + if(!target_found) { + pm_printf(ALPM_LOG_ERROR, _("argument '-' specified with empty stdin\n")); + cleanup(1); + } } else { /* do not read stdin from terminal */ pm_printf(ALPM_LOG_ERROR, _("argument '-' specified without input on stdin\n")); -- 1.8.3