Arguments query of \parbox

[Arash Esbati]

Hi all,

I think the query of arguments for \parbox isn't correct with the
current implementation.  FTR, \parbox has the following syntax:

  \parbox[<position>][<height>][<inner-pos>]{<width>}{<contents>}

where supported values for <position> are t, b or c and the ones for
<inner-pos> are t, b, c or s.  latex.el does this:

  '("parbox" [ TeX-arg-tb ] [ "Height" ]
             [ TeX-arg-tb "Inner position" ]
             "Width" t)

and `TeX-arg-tb' is defined as:

  (defun TeX-arg-tb (optional &optional prompt)
    "Prompt for a LaTeX side with completion.[...]"
    (TeX-argument-insert
     (completing-read
      (TeX-argument-prompt optional prompt "Position")
      '(("") ("t") ("b"))
      nil t)
     optional))

I suggest to define a new function like (suggestions for better name are
welcome):

  (defun TeX-arg-parbox-pos (optional &optional prompt innerpos)
    (TeX-argument-insert
     (completing-read
      (TeX-argument-prompt optional prompt "Position")
      (if innerpos
          '("t" "b" "c" "s")
        '("t" "b" "c"))
      nil t)))

and then change the entry for "parbox" to:

  '("parbox" [TeX-arg-parbox-pos]
             [TeX-arg-length "Height"]
             [TeX-arg-parbox-pos "Inner position" t]
             (TeX-arg-length "Width")
             t)

minipage environment has the same issue, but I have to look closer.

And while we're at it, I would delete the ("") entries in
`TeX-arg-corner' and `TeX-arg-lr' which are not necessary and were
always confusing to me.

Any comments welcome.

Best, Arash