luatex disobeys `@allowcodebreaks false`

[Werner LEMBERG]

[texinfo.tex 2022-12-17.18]
[LuaTeX, Version 1.15.0 (TeX Live 2022) Development id: 7509]


Consider this input file `luatex.texi`.

```
\input texinfo

@afivepaper

@set txicodequoteundirected
@set txicodequotebacktick
@allowcodebreaks false

This is a long-long-long-word and another @code{Long-Long-Long-Word}.
This is a long-long-long-word and another @code{Long-Long-Long-Word}.
This is a long-long-long-word and another @code{Long-Long-Long-Word}.
This is a long-long-long-word and another @code{Long-Long-Long-Word}.
This is a long-long-long-word and another @code{Long-Long-Long-Word}.
This is a long-long-long-word and another @code{Long-Long-Long-Word}.
This is a long-long-long-word and another @code{Long-Long-Long-Word}.
This is a long-long-long-word and another @code{Long-Long-Long-Word}.
This is a long-long-long-word and another @code{Long-Long-Long-Word}.
This is a long-long-long-word and another @code{Long-Long-Long-Word}.
This is a long-long-long-word and another @code{Long-Long-Long-Word}.
This is a long-long-long-word and another @code{Long-Long-Long-Word}.
This is a long-long-long-word and another @code{Long-Long-Long-Word}.
This is a long-long-long-word and another @code{Long-Long-Long-Word}.
This is a long-long-long-word and another @code{Long-Long-Long-Word}.
This is a long-long-long-word and another @code{Long-Long-Long-Word}.

@bye
```

Attached are images for

```
texi2pdf luatex.texi
PDFTEX=luatex texi2pdf luatex.texi
```

As can be seen, luatex ignores `@allowcodebreaks false`.

If I insert

```
@tracingall
@tracingonline0
```

and compare pdfTeX with LuaTeX, I see the following in the logfile:

```
@setcodequotes ->@let `@codequoteleft @let '@codequoteright 
 {@let}
 {changing `=macro:->`}
-{into `=macro:->@ifusingtt {@ifflagclear {txic@ETC.}
+{into `=macro:->@ifusingtt {@ifflagclear {txicod@ETC.}
 {@let}
 {changing '=macro:->'}
-{into '=macro:->@ifusingtt {@ifflagclear {txic@ETC.}
+{into '=macro:->@ifusingtt {@ifflagclear {txicod@ETC.}
 {@catcode}
-{reassigning @catcode45=13}
 {@catcode}
-{reassigning @catcode95=13}
 {@iffalse: (level 1) entered on line 12}
 {false}
 {@else: @iffalse (level 1) entered on line 12}
```

I'm not sure whether this is due to slightly different logging output
of `luatex` or due to a real code difference (either in the macro code
or in LuaTeX itself).


    Werner