Chet Ramey wrote: > Here's the deal. Only single quotes and backslashes quote the history > expansion character. Double quotes don't matter ...
Then why do they cause a difference in behaviour? > Since ! is not one of the characters for which Posix says the backslash > will act as an escape, the rest of the word expansions leave it alone. Then why does “\!” act as “!” under any circumstances at all? > This is explained pretty well in the HISTORY EXPANSION section of the > manual page. Do you mean this sentence from section 9.3: “Only ‘\’ and ‘'’ may be used to escape the history expansion character”. How exactly does that explain why there is a difference inside versus outside double-quotes?
