diff options
Diffstat (limited to 'shell/hush.c')
| -rw-r--r-- | shell/hush.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/shell/hush.c b/shell/hush.c index f9a8de4..dc05f24 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -9872,7 +9872,8 @@ static int FAST_FUNC builtin_shift(char **argv) #if ENABLE_HUSH_GETOPTS static int FAST_FUNC builtin_getopts(char **argv) { -/* +/* http://pubs.opengroup.org/onlinepubs/9699919799/utilities/getopts.html + TODO: If an invalid option is seen, getopts places ? into VAR and, if not silent, prints an error message and unsets OPTARG. If @@ -9886,6 +9887,8 @@ colon (:) is placed in VAR and OPTARG is set to the option character found. Test that VAR is a valid variable name? + +"Whenever the shell is invoked, OPTIND shall be initialized to 1" */ char cbuf[2]; const char *cp, *optstring, *var; @@ -9920,14 +9923,20 @@ Test that VAR is a valid variable name? exitcode = EXIT_FAILURE; c = '?'; } - if (optarg) - set_local_var_from_halves("OPTARG", optarg); - else - unset_local_var("OPTARG"); cbuf[0] = c; cbuf[1] = '\0'; set_local_var_from_halves(var, cbuf); set_local_var_from_halves("OPTIND", utoa(optind)); + + /* Always set or unset, never left as-is, even on exit/error: + * "If no option was found, or if the option that was found + * does not have an option-argument, OPTARG shall be unset." + */ + if (optarg) + set_local_var_from_halves("OPTARG", optarg); + else + unset_local_var("OPTARG"); + return exitcode; } #endif |