@c args with braces, without braces/following whitespace

should be e`: @`{e} @`e

should be e': @'{e} @'e

should be e^: @^{e} @^e

should be u": @"{u} @"u

should be i`: @`{i} @`i

should be i': @'{i} @'i

should be i^: @^{i} @^i

should be u": @"{u} @"u

should be c,: @,{c} @,c

should be n~: @~{n} @~n

should be e=: @={e} @=e

should be e@w{'}': @H{e} @H e

should be e.: @dotaccent{e} @dotaccent e

should be e*: @ringaccent{e} @ringaccent e

should be ee[: @tieaccent{ee}

should be e(: @u{e} @u e

should be e_: @ubaraccent{e} @ubaraccent e

should be .e: @udotaccent{e} @udotaccent e

should be e<: @v{e} @v e

upside down: @questiondown{} @exclamdown{}

A-with-circle: @aa{},@AA{}

AE, OE ligatures: @ae{} @AE{} @oe{} @OE{}

dotless i, j: @dotless{i} @dotless{j}

Polish suppressed-L: @l{} @L{}

O-with-slash: @o{} @O{}

es-zet or sharp S: @ss{}          

pounds sterling: @pounds{}      

@c arg is command
should be dotless i`: @`{@dotless{i}}

should be dotless i': @'{@dotless{i}}

should be dotless i^: @^{@dotless{i}}

should be dotless i": @"{@dotless{i}}
