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vsh: Don't put VSH_OT_ALIAS onto list of completions 

We've invented VSH_OT_ALIAS type for --option so that we can
rewrite some --options (e.g. fix spelling). For instance
blkdeviotune command uses this feature heavily:
--options-with-dash are preferred over old
--options_with_underscore. Both versions are supported but only
the new ones (not aliased) are documented and reported in --help.

Except for options completer, which happily put also aliased
versions in front of user's eyes.

Note, there is a second (gross) way we use aliases: to rewrite
options from --oldoption to --newoption=value (for instance
--shareable option of attach-disk is an alias of
--mode=shareable). And just like with the previous group - don't
generate them into the list of possible options.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jonathon Jongsma <jjongsma@redhat.com>
This commit is contained in:
Michal Privoznik 2021-02-02 14:55:28 +01:00
parent d3b2d5158a
commit 58aeebe096
1 changed files with 5 additions and 3 deletions
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8
tools/vsh.c
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@ -2614,7 +2614,6 @@ vshReadlineOptionsGenerator(const char *text,
{
size_t list_index = 0;
size_t len = strlen(text);
const char *name;
size_t ret_size = 0;
char **ret = NULL;
@ -2624,12 +2623,15 @@ vshReadlineOptionsGenerator(const char *text,
if (!cmd->opts)
return NULL;
while ((name = cmd->opts[list_index].name)) {
for (list_index = 0; cmd->opts[list_index].name; list_index++) {
const char *name = cmd->opts[list_index].name;
bool exists = false;
vshCmdOpt *opt = last->opts;
size_t name_len;
list_index++;
/* Skip aliases, we do not report them in help output either. */
if (cmd->opts[list_index].type == VSH_OT_ALIAS)
continue;
if (len > 2) {
/* provide auto-complete only when the text starts with -- */