No, \mathnolimitsmode value affects the third line (consistent with documentation], but the last line is unaffected. It seems like subscript: 0 superscript +ic (terminology from documentation).

The \showlists of the third line (which is correct, \mathnolimitsmode=0) prints

.\hbox(8.05+3.06)x6.65, shifted -0.00499, direction TLT
..\fA ∫
.\kern-3.32 (font)
.\vbox(15.258+0.14)x7.863, shifted 5.05501, direction TLT
..\hbox(4.648+0.0)x4.543, shifted 3.32, direction TLT
...\fB 1
..\kern5.962 (font)
..\hbox(4.648+0.14)x4.543, direction TLT
...\fB 0

but the \showlists of the last line prints:

\hbox(8.05+3.06)x6.65, shifted -0.00499, direction TLT
.\fA ∫
\vbox(15.258+0.14)x7.863, shifted 5.05501, direction TLT
.\hbox(4.648+0.0)x4.543, shifted 3.32, direction TLT
..\fB 1
.\kern5.962 (font)
.\hbox(4.648+0.14)x4.543, direction TLT
..\fB 0

Note, there is no "\kern-3.32 (font)" which is the minus value of the italic correction of the int operator.

Petr Olsak


On 11/17/22 19:09, Hans Hagen wrote:
On 11/17/2022 5:54 PM, Petr Olsak wrote:
Hello

suppose following testing file:

-------------------

CM, intop+nolimits: $\intop\nolimits_0^1$

CM, intop directly: $\intop_0^1$

\ifx\directlua\undefined \else \input luafonts \fi

\font\fA=[latinmodern-math]:mode=base;script=math;ssty=0;
\font\fB=[latinmodern-math]:mode=base;script=math;ssty=1; at7pt

\Umathchardef\intop="1"00"00222B

\textfont0=\fA \scriptfont0=\fB

LM, intop+nolimits $\intop\nolimits_0^1$

LM, intop directly $\intop_0^1$

\bye
i can't run it but maybe you want

\mathnolimitsmode 3

Hans

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