local / declare, etc. can't be aliased

[andychu]

From #236 by @lhoursquentin

I'm not sure what I think about this yet, but it seems to be a separate issue.

For instance mksh has by default an alias to replace local by typeset

$ mksh -c alias | grep local
local='\\builtin typeset'

[andychu]

Also here is my snippet from Zulip showing why declare has to be statically parsed sometimes.

I think what other shells do is set some flags in words for "nosplit" or something like that.

$ d=declare
$ x='a b'

$ declare x=$x  # statically parsed, shell knows it's declare, no word splitting
$ echo $x
a b

$ $d x=$x  # dynamically parsed, word splitting
$ echo $x
a

[andychu]

Fixed with 0.7.pre2