ltnews31, ptex-p3.8.3

[aminophen]

pdfTeX primitives

As stated in ltnews31, LaTeX will require many pdfTeX-derived primitives.

I see the following issues:

• \expanded: current ptex-ng returns \show\expanded => > \expanded=\jobname.
• \ifincsname: undefined (added in e-pTeX 190709)
• \ifpdfprimitive, \pdfprimitive: undefined (added in e-pTeX 150805; many bugs are fixed in 2017; search "pdfprimitive" through web2c/eptexdir/ChangeLog)
• \pdfshellescape: undefined (added in e-pTeX 141108)

pTeX primitives

Please see changes in pTeX r53726-r53727; current ptex-ng returns wrong values in fetching \kansujichar. The below is a test suite. (expected output is shown in comments)

%% block 1
\showthe\kansujichar1\relax % => 19968.
\showthe\dimen200\relax     % => 0.0pt.
\showthe\kansujichar1\relax % => 19968.
\showthe\skip200\relax      % => 0.0pt.
\showthe\kansujichar1\relax % => 19968.
\showthe\count200\relax     % => 0.
\showthe\kansujichar1\relax % => 19968.

%% block 2
\showthe\kansujichar10\relax % => ! Invalid KANSUJI number (10). % => 10.
\showthe\dimen200\relax      % => 0.0pt.
\showthe\kansujichar10\relax % => ! Invalid KANSUJI number (10). % => 10.
\showthe\skip200\relax       % => 0.0pt.
\showthe\kansujichar10\relax % => ! Invalid KANSUJI number (10). % => 10.
\showthe\count200\relax      % => 0.
\showthe\kansujichar10\relax % => ! Invalid KANSUJI number (10). % => 10.

\end

[clerkma]

Thanks. Current status is listed here:

• \show\expanded: fixed
• \kansujichar10: fixed
• \pdfshellescape: I added an alias (\shellescape to \pdfshellescape)
• \ifincsname: TODO
• \ifpdfprimitive: TODO
• \pdfprimitive: TODO

For the last three primitives, I still need one day or two.

[clerkma]

finished with 9d276ee5cc5bfec5f2a050c4c1a53ea7e763b8b8.

[aminophen]

Thanks, all of them are working as expected!

I noticed some additional differences between euptex and ptex-ng:

• \fontcharwd etc. for char<256: See https://github.com/TeX-Live/texlive-source/commit/2f118d2c4c0d731ef041a26cea7fc80d48e35365. MWE:

%#!euptex
\jfont\x=upjisr-h \x
\showthe\fontcharwd\jfont`°\relax % => should be "10.0pt"
\showthe\fontcharwd\jfont"B7\relax % => should be "5.0pt"
\showthe\fontcharwd\jfont`ー\relax % => 10.0pt
\showthe\fontcharwd\jfont`、\relax % => 5.0pt
\showthe\fontcharwd\jfont`（\relax % => 5.0pt
\showthe\fontcharwd\tfont`漢\relax % => 10.0pt
\bye

• New specification with \fontcharwd etc. and \iffontchar, introduced in e-pTeX 190709: See https://github.com/TeX-Live/texlive-source/commit/8a39f4e259e5adee484708aa18562ea2d7b5a3d4. Excerpt from ChangeLog:

    * eptex.ech: Revise \iffontchar and \fontchar?? to treat
    negative value as char_type.
      - \iffontchar (Japanese font f) (number c):
        - c >= 0: true iff is_char_kanji(c)
        - c < 0: true iff f has char_type -(c+1)
      - \fontcharwd (Japanese font f) (number c):
        - c >= 0: return the width of character c
        - c < 0: return the width of char_type -(c+1)

[clerkma]

fixed in ddd1535546585af42036e73db7e5e7896aaa544e.

[aminophen]

Sorry for late reply, confirmed thanks!