locale question

[Thomas Arneson]

   JVERSION

Engine: j9.7.1/j64avx2/windows

Build: commercial/2026-04-06T04:05:46/clang-19-1-5/SLEEF=1

Library: 9.7.17

Qt IDE: 2.6.3/6.10.3(6.10.3)

OS Ver: Windows 11 Version 25H2 10.0.26200

Platform: Win 64

Installer: j9.7 install

InstallPath: c:/program files/j9.7

Contact: www.jsoftware.com

 

I have locale named pnum and want to remove it via coerase

 

coerase <'pnum'

 

1

 

conames''

 

base j jcfg jcompare

 

jgl2 jp jqtide jregex

 

jrx jtask pnum z 

 

NB. pnum is still there. i see this in both Android and Windows 11

 

 

 

[Henry Rich]

By default, named locales cannot be erased.  [This is because one thread might delete a locale just as another thread starts executing in it; preventing a disaster would require an expensive RFO cycle every time a named locale is executed.  To avoid this named locales are /permanent/ by default, and 18!:55 is ignored for them.]

To make a named locale impermanent, create it explicitly with an x argument less than 0, as in

   _3 cocreate 'pnum'

Henry Rich

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[Thomas Arneson]

Henry, thanks for the rapid reply, however your suggestion fails for me. 

None of the documentation which I read mentioned the permanence of named locales.

the windows version of J 9.7 fails with the negative x. See the clip below:  

 

|domain error in cocreate, executing dyad 18!:3

 

| _1 cocreate'pnum'

 

|[-6] c:\users\tom\j9.7-user\temp\numpad.ijs

 

Press ENTER to inspect

 

[Henry Rich]

Sorry, I misread the Wiki page.  Try

   _3 cocreate <'pnum'

Henry Rich

[Henry Rich]

Look at https://code.jsoftware.com/wiki/Vocabulary/Foreigns#m18 for n=3 and 55.

Henry Rich

On 7/8/2026 5:13 PM, Thomas Arneson wrote: