diff options
Diffstat (limited to 'linux-user/main.c')
| -rw-r--r-- | linux-user/main.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/linux-user/main.c b/linux-user/main.c index d8b0cd65fa..4e92a0b4c5 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -3406,27 +3406,35 @@ static void usage(void) "Options and associated environment variables:\n" "\n"); - maxarglen = maxenvlen = 0; + /* Calculate column widths. We must always have at least enough space + * for the column header. + */ + maxarglen = strlen("Argument"); + maxenvlen = strlen("Env-variable"); for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) { + int arglen = strlen(arginfo->argv); + if (arginfo->has_arg) { + arglen += strlen(arginfo->example) + 1; + } if (strlen(arginfo->env) > maxenvlen) { maxenvlen = strlen(arginfo->env); } - if (strlen(arginfo->argv) > maxarglen) { - maxarglen = strlen(arginfo->argv); + if (arglen > maxarglen) { + maxarglen = arglen; } } - printf("%-*s%-*sDescription\n", maxarglen+3, "Argument", - maxenvlen+1, "Env-variable"); + printf("%-*s %-*s Description\n", maxarglen+1, "Argument", + maxenvlen, "Env-variable"); for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) { if (arginfo->has_arg) { printf("-%s %-*s %-*s %s\n", arginfo->argv, - (int)(maxarglen-strlen(arginfo->argv)), arginfo->example, - maxenvlen, arginfo->env, arginfo->help); + (int)(maxarglen - strlen(arginfo->argv) - 1), + arginfo->example, maxenvlen, arginfo->env, arginfo->help); } else { - printf("-%-*s %-*s %s\n", maxarglen+1, arginfo->argv, + printf("-%-*s %-*s %s\n", maxarglen, arginfo->argv, maxenvlen, arginfo->env, arginfo->help); } |