bug#12988: [PATCH] RE: bug#12988: isearch fails to persistently indicate case sensitivity

[Juri Linkov]

>> I think that would be fine, though full strings (like "case",
>> "strict-space") might be better than cryptic acryonyms.
>
> In an earlier thread I suggested "Isearch/w/c" where the letters would
> match the keys used to enable/select those options.

The problem is that some of these keys are not alphanumeric,
thus not easily recognizable when displayed in the prompt.

>> Also, the default state should be associated with a blank indicator,
>> i.e. plain "Isearch".

Since the default prompt should be short plain "Isearch",
after adding longer non-cryptic indicators for non-default states,
the problem of the long prompt will occur less often,
especially after removing the failing/wrapped/pending messages.