Re: Small challenge: sort names

From	cross@spitfire.i.gajendra.net (Dan Cross)
Newsgroups	comp.lang.c
Subject	Re: Small challenge: sort names
Date	2026-04-28 18:12 +0000
Organization	PANIX Public Access Internet and UNIX, NYC
Message-ID	<10sqt9p$gat$1@reader1.panix.com> (permalink)
References	<10r4h6o$396qn$1@dont-email.me> <10spkg2$2uc64$1@dont-email.me> <10sqck5$elp$1@reader1.panix.com> <10sqegt$33m2d$2@dont-email.me>

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In article <10sqegt$33m2d$2@dont-email.me>,
David Brown  <david.brown@hesbynett.no> wrote:
>On 28/04/2026 15:27, Dan Cross wrote:
>> In article <10spkg2$2uc64$1@dont-email.me>,
>> David Brown  <david.brown@hesbynett.no> wrote:
>>> On 27/04/2026 22:43, Dan Cross wrote:
>>>> In article <10sof6k$2l43i$1@kst.eternal-september.org>,
>>>> Keith Thompson  <Keith.S.Thompson+u@gmail.com> wrote:
>>>>> "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> writes:
>>>>>> On 4/27/2026 12:42 PM, Chris M. Thomasson wrote:
>>>>> [...]
>>>>>>> Fwiw, I only use '\0' for the null terminator in strings, not for
>>>>>>> pointers...
>>>>>
>>>>> I'm not sure why that's worth mentioning.  The only reason I can
>>>>> think of to use '\0' for pointers is deliberate obfuscation, or
>>>>> *maybe* testing how a compiler handles it.
>>>>
>>>> Some time ago, a rather famous production outage at Google was
>>>> the result of something very similar.  The author wrote,
>>>>
>>>> 	ptr->some_bool = false;
>>>>
>>>> where what was meant was,
>>>>
>>>> 	*ptr->some_bool = false;
>>>>
>>>> Here, `some_bool` was `bool *some_bool`.  Perfectly legal, of
>>>> course: `false` was just a macro expanding to the integer
>>>> constant 0, which in pointer context is a null pointer constant,
>>>> thus setting `some_bool` to the null pointer.  But clearly what
>>>> was meant was to assign false to the actual boolean.  Oops.
>>>>
>>>> At the time, the compiler (gcc) did not emit a diagnostic for
>>>> this, but `clang` did.  The build system was quickly changed to
>>>> invoke both; showing combined diagnostics from both compilers,
>>>> but keeping only the object file emitted by gcc (as I understand
>>>> it, Google has since switched to using `clang` as the default
>>>> compiler in its monorepo).
>>>>
>>>> This, and similar incidents, are one reason I greatly prefer
>>>> domain-specific constructs (e.g, '\0' for character data instead
>>>> of plain ol' 0) and explicit comparisons (`if (ptr != NULL)` vs
>>>> `if (ptr)`).  Over time and at large enough scale, these things
>>>> really do start to matter.
>>>
>>> Unfortunately in this case, "false" /is/ the domain-specific construct
>>> for setting the boolean to false (rather than using, say, 0).
>> 
>> Indeed it is!  But not for pointers.  
>
>Of course.
>
>> Nothing prevents a
>> compiler frontend from emiting a warning saying, "you are
>> assigning false to a pointer to bool, not the bool; did you
>> forget a `*`?"  Indeed, `clang` did that, but `gcc` (at the
>> time; this was well over a decade ago now) did not.
>
>Sure, compilers can have warnings on anything they like.  (And I think 
>this is a good warning from clang.)
>
>> And, of course, a human reviewer looking at that _should_ say,
>> "wait, assigning `false` to a pointer doesn't seem right...."
>> whereas using `0` is ambiguous.  (All production code at Google
>> is reviewed, but in this case, the reviewer simply missed the
>> bug.)
>
>True.  But in this case, "some_bool" is also ambiguous - is it a bool, 
>or a pointer to a bool?  A human reviewer who was not very familiar with 
>the struct here might easily see it as looking correct.  (Perhaps the 
>real mistake here is calling it "some_bool" rather than "some_bool_ptr", 
>or whatever convention is preferred.)

I thought it would have been obvious that that wasn't the actual
name; that was just a contrived name I chose for this simplified
explanation of the issue.

I no longer recall what the actual name was; it wasn't code that
I worked on.  I knew about it, of course, and knew the engineer
responsible; he's an excellent programmer.

Incidentally, his responose to the problem saved his job, and is
(IMHO) a model of professionalism and a stellar example of
taking responsibility for an issue one created.

Said engineer was formerly an SRE, and well-known to that side
of the organization (at the time, it wasn't so large).  Once he
saw what was happening, he immediately took charge of the
situation, informed stake-holders, let them know he was taking
responsibility, root-caused the issue, issued a fix, and began
restoring lost data: several million users had been affected;
that may sound like a lot, but by Google standards isn't
actually pretty small.  Still, it was high-profile.  In the end,
no user data was lost, thanks in no small part to his actions.

He then drafted a post-mortem, with recommendations for future
mitigations, and got the ball rolling on working with the
toolchains and build infrastructure people to roll out using the
clang frontend everywhere.

>>> I fully
>>> agree with you on the principle, however.
>> 
>> I'm tracking.  Just clarifying what I meant above.
>
>Sure.
>
>>> And unfortunately, C has a number of implicit conversions that can be
>>> inappropriate in real code, such as this one.  I don't think it is
>>> possible at this stage to change this.  (C++, I believe, disallows this
>>> particular code - but the rules for conversion to and from bool in C++
>>> are very complicated and not easily transferable to C.)  Compiler
>>> warnings, despite the code being valid C, are the best we can hope for
>>> here.  (It's a shame gcc doesn't warn on that one - clang and gcc each
>>> have a few unique warnings, so using both for static error checking is
>>> not a bad idea.)
>> 
>> GCC may well warn on it now; this incident (which made the press
>> at the time) was a very long time ago now.
>
>It did not, on the very quick test I did.

That's unfortunate.

>>> Even in C++, many people find the implicit bool conversions too broad,
>>> and prefer to use a "strong bool" type.
>> 
>> I would not classify C++ as a strongly-typed language, in large
>> part because of the implicit conversions it inherited from C.
>
>C++ supports stronger typing than C,

That is not setting the bar high.  :-/

>but it certainly inherited many of 
>its weak points - including this particular implicit conversion.  So you 
>have to make your own strong bool class :
>
>class StrongBool {
>public :
>     bool value_;  // Make this public so that the type is structural
>
>     constexpr StrongBool() = default;
>     constexpr StrongBool(bool x) : value_(x) {}
>     constexpr StrongBool(const StrongBool&) = default;
>     template <typename U> constexpr StrongBool(U x) = delete;
>
>     constexpr explicit operator bool() const { return value_; }
>};
>
>(A real class would have some logic operators too, but this is enough to 
>stop all implicit conversions while still allowing it to be used in "if" 
>statements and the like.  The code is untested.)
>
>It would be nicer if this were in the standard library.
>
>> In Rust, for example, there are no such conversions, and the
>> language enforces that conditionals evaluate an expression
>> resulting in an explicit `bool`.  Hence, in that language, one
>> cannot write `let foo = 0u8; if foo { ... }` because `foo` is
>> not a `bool`, despite having the same value and representation
>> as `false`.
> 
>That's the advantage of not having to pander to backwards compatibility 
>with a weaker typed language!

Yup.

	- Dan C.

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Small challenge: sort names DFS <nospam@dfs.com> - 2026-04-07 23:14 -0400
  Re: Small challenge: sort names Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-08 10:22 +0200
    Re: Small challenge: sort names DFS <nospam@dfs.com> - 2026-04-08 12:25 -0400
      Re: Small challenge: sort names Bart <bc@freeuk.com> - 2026-04-08 18:57 +0100
        Re: Small challenge: sort names scott@slp53.sl.home (Scott Lurndal) - 2026-04-08 21:04 +0000
          Re: Small challenge: sort names Michael S <already5chosen@yahoo.com> - 2026-04-09 00:10 +0300
            Re: Small challenge: sort names scott@slp53.sl.home (Scott Lurndal) - 2026-04-08 23:35 +0000
              Re: Small challenge: sort names Michael S <already5chosen@yahoo.com> - 2026-04-09 02:59 +0300
                Re: Small challenge: sort names James Kuyper <jameskuyper@alumni.caltech.edu> - 2026-04-09 06:29 -0400
                Re: Small challenge: sort names cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-09 15:15 +0000
                Re: Small challenge: sort names Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-04-11 08:49 -0700
                Re: Small challenge: sort names cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-11 19:59 +0000
                Re: Small challenge: sort names Bonita Montero <Bonita.Montero@gmail.com> - 2026-04-16 18:50 +0200
                Re: Small challenge: sort names cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-16 19:54 +0000
                Re: Small challenge: sort names Bonita Montero <Bonita.Montero@gmail.com> - 2026-04-17 16:22 +0200
              Re: Small challenge: sort names Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-04-08 17:27 -0700
              Re: Small challenge: sort names Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-04-08 22:14 -0700
                Re: Small challenge: sort names Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-04-09 02:19 -0700
                Re: Small challenge: sort names scott@slp53.sl.home (Scott Lurndal) - 2026-04-09 15:06 +0000
                Re: Small challenge: sort names Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-04-12 06:35 -0700
                Re: Small challenge: sort names scott@slp53.sl.home (Scott Lurndal) - 2026-04-12 14:51 +0000
                Re: Small challenge: sort names Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-04-13 06:31 -0700
                Re: Small challenge: sort names Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-04-12 06:48 -0700
                Re: Small challenge: sort names Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-04-12 16:15 -0700
                Re: Small challenge: sort names Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-04-25 13:31 -0700
                Re: Small challenge: sort names Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-04-25 15:12 -0700
                Re: Small challenge: sort names Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-26 04:13 +0200
                Re: Small challenge: sort names Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-04-25 19:50 -0700
                Re: Small challenge: sort names Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-26 05:28 +0200
                Re: Small challenge: sort names David Brown <david.brown@hesbynett.no> - 2026-04-26 12:08 +0200
                Re: Small challenge: sort names Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-26 18:16 +0200
                Re: Small challenge: sort names David Brown <david.brown@hesbynett.no> - 2026-04-26 19:37 +0200
                Re: Small challenge: sort names Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-27 02:17 +0200
                Re: Small challenge: sort names David Brown <david.brown@hesbynett.no> - 2026-04-27 09:19 +0200
                Re: Small challenge: sort names scott@slp53.sl.home (Scott Lurndal) - 2026-04-26 17:47 +0000
                Re: Small challenge: sort names Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-27 02:33 +0200
                Re: Small challenge: sort names David Brown <david.brown@hesbynett.no> - 2026-04-27 09:34 +0200
                Re: Small challenge: sort names Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-27 12:35 +0200
                Re: Small challenge: sort names Bart <bc@freeuk.com> - 2026-04-27 13:28 +0100
                Re: Small challenge: sort names Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-27 17:02 +0200
                Re: Small challenge: sort names Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-27 17:36 +0200
                Re: Small challenge: sort names scott@slp53.sl.home (Scott Lurndal) - 2026-04-27 16:18 +0000
                Re: Small challenge: sort names Michael S <already5chosen@yahoo.com> - 2026-04-27 11:42 +0300
                Re: Small challenge: sort names scott@slp53.sl.home (Scott Lurndal) - 2026-04-27 16:27 +0000
                Assembler verb choice (Was: Small challenge: sort names) gazelle@shell.xmission.com (Kenny McCormack) - 2026-04-28 12:59 +0000
                Re: Assembler verb choice (Was: Small challenge: sort names) Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-28 16:26 +0200
                Re: Small challenge: sort names "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-04-27 12:45 -0700
                Re: Small challenge: sort names "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-04-27 12:42 -0700
                Re: Small challenge: sort names "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-04-27 12:43 -0700
                Re: Small challenge: sort names Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-04-27 12:59 -0700
                Re: Small challenge: sort names "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-04-27 13:26 -0700
                Re: Small challenge: sort names cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-27 20:43 +0000
                Re: Small challenge: sort names "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-04-27 17:30 -0700
                Re: Small challenge: sort names Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-04-27 19:15 -0700
                Re: Small challenge: sort names gazelle@shell.xmission.com (Kenny McCormack) - 2026-04-28 12:01 +0000
                Re: Small challenge: sort names David Brown <david.brown@hesbynett.no> - 2026-04-28 08:35 +0200
                Re: Small challenge: sort names cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-28 13:27 +0000
                Re: Small challenge: sort names David Brown <david.brown@hesbynett.no> - 2026-04-28 15:59 +0200
                Re: Small challenge: sort names Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-28 16:49 +0200
                Re: Small challenge: sort names David Brown <david.brown@hesbynett.no> - 2026-04-28 17:25 +0200
                Re: Small challenge: sort names Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-28 23:46 +0200
                Re: Small challenge: sort names cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-28 18:12 +0000
                Re: Small challenge: sort names David Brown <david.brown@hesbynett.no> - 2026-04-28 20:28 +0200
                Re: Small challenge: sort names vallor <vallor@vallor.earth> - 2026-04-28 13:45 +0000
          Re: Small challenge: sort names Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-11 08:44 +0200
        Re: Small challenge: sort names DFS <nospam@dfs.com> - 2026-04-08 17:13 -0400
          Re: Small challenge: sort names Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-11 08:59 +0200
            Re: Small challenge: sort names Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-11 09:34 +0200
      Re: Small challenge: sort names Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-11 08:31 +0200
      Re: Small challenge: sort names vallor <vallor@vallor.earth> - 2026-04-28 14:19 +0000
    Re: Small challenge: sort names BGB <cr88192@gmail.com> - 2026-04-12 13:08 -0500
    What is the point of anything? (Was: Small challenge: sort names) gazelle@shell.xmission.com (Kenny McCormack) - 2026-04-17 20:44 +0000
  Re: Small challenge: sort names Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-04-08 18:46 -0700
  Re: Small challenge: sort names Sort <Sort@invalid.invalid> - 2026-04-11 19:15 +0100
  Re: Small challenge: sort names Bonita Montero <Bonita.Montero@gmail.com> - 2026-04-16 18:24 +0200
    Re: Small challenge: sort names Bart <bc@freeuk.com> - 2026-04-16 18:38 +0100
      Re: Small challenge: sort names Bonita Montero <Bonita.Montero@gmail.com> - 2026-04-16 19:43 +0200
    Re: Small challenge: sort names Bart <bc@freeuk.com> - 2026-04-18 11:22 +0100
      Re: Small challenge: sort names Bonita Montero <Bonita.Montero@gmail.com> - 2026-04-18 17:48 +0200
        Re: Small challenge: sort names Bonita Montero <Bonita.Montero@gmail.com> - 2026-04-19 08:44 +0200
    Re: Small challenge: sort names DFS <nospam@dfs.com> - 2026-04-22 05:33 -0400
      Re: Small challenge: sort names Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-04-22 03:16 -0700
        Re: Small challenge: sort names DFS <nospam@dfs.com> - 2026-04-22 07:35 -0400
          Re: Small challenge: sort names Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-04-23 08:11 -0700
            Re: Small challenge: sort names Bonita Montero <Bonita.Montero@gmail.com> - 2026-04-23 20:14 +0200
              Re: Small challenge: sort names gazelle@shell.xmission.com (Kenny McCormack) - 2026-04-23 18:30 +0000
        Re: Small challenge: sort names gazelle@shell.xmission.com (Kenny McCormack) - 2026-04-23 17:19 +0000
      Re: Small challenge: sort names Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-22 14:11 +0200
        Re: Small challenge: sort names James Kuyper <jameskuyper@alumni.caltech.edu> - 2026-04-22 21:27 -0400
          [OT][meta] Gender (was Re: Small challenge: sort names) Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-23 15:51 +0200
            Re: [OT][meta] Gender (was Re: Small challenge: sort names) scott@slp53.sl.home (Scott Lurndal) - 2026-04-23 14:45 +0000
              Re: [OT][meta] Gender (was Re: Small challenge: sort names) Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-23 17:03 +0200
              Re: [OT][meta] Gender (was Re: Small challenge: sort names) DFS <nospam@dfs.com> - 2026-04-23 20:31 -0400
                Re: [OT][meta] Gender (was Re: Small challenge: sort names) Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-04-23 18:43 -0700
                Re: [OT][meta] Gender (was Re: Small challenge: sort names) gazelle@shell.xmission.com (Kenny McCormack) - 2026-04-24 16:58 +0000
                Re: [OT][meta] Gender (was Re: Small challenge: sort names) Jan van den Broek <balglaas@dds.nl> - 2026-04-24 06:57 +0000
                Re: [OT][meta] Gender (was Re: Small challenge: sort names) Bonita Montero <Bonita.Montero@gmail.com> - 2026-04-24 10:10 +0200
                Re: [OT][meta] Gender (was Re: Small challenge: sort names) David Brown <david.brown@hesbynett.no> - 2026-04-24 12:52 +0200
            Re: [OT][meta] Gender (was Re: Small challenge: sort names) Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-04-23 16:36 -0700
              Re: [OT][meta] Gender (was Re: Small challenge: sort names) Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-24 03:01 +0200
                Re: [OT][meta] Gender (was Re: Small challenge: sort names) Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-04-23 18:50 -0700
                Re: [OT][meta] Gender (was Re: Small challenge: sort names) "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-04-24 20:35 -0700
            Re: [OT][meta] Gender (was Re: Small challenge: sort names) Michael S <already5chosen@yahoo.com> - 2026-04-24 14:20 +0300
              Re: [OT][meta] Gender (was Re: Small challenge: sort names) Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-24 14:32 +0200
      Re: Small challenge: sort names Bonita Montero <Bonita.Montero@gmail.com> - 2026-04-23 20:10 +0200
        Re: Small challenge: sort names DFS <nospam@dfs.com> - 2026-04-25 10:26 -0400
          Re: Small challenge: sort names Bonita Montero <Bonita.Montero@gmail.com> - 2026-04-26 13:01 +0200
  Re: Small challenge: sort names Rosario19 <Ros@invalid.invalid> - 2026-04-18 11:16 +0200
    Re: Small challenge: sort names DFS <nospam@dfs.com> - 2026-04-18 08:11 -0400
      Re: Small challenge: sort names Bart <bc@freeuk.com> - 2026-04-18 14:03 +0100
    Re: Small challenge: sort names Rosario19 <Ros@invalid.invalid> - 2026-04-20 21:20 +0200
      Re: Small challenge: sort names DFS <nospam@dfs.com> - 2026-04-20 16:43 -0400
        Re: Small challenge: sort names Rosario19 <Ros@invalid.invalid> - 2026-04-21 05:09 +0200
          Re: Small challenge: sort names DFS <nospam@dfs.com> - 2026-04-21 08:46 -0400
            Re: Small challenge: sort names Bart <bc@freeuk.com> - 2026-04-21 16:08 +0100
              Re: Small challenge: sort names DFS <nospam@dfs.com> - 2026-04-21 11:33 -0400
                Re: Small challenge: sort names Bart <bc@freeuk.com> - 2026-04-21 18:25 +0100
                Re: Small challenge: sort names scott@slp53.sl.home (Scott Lurndal) - 2026-04-21 17:38 +0000
                Re: Small challenge: sort names Michael S <already5chosen@yahoo.com> - 2026-04-21 20:50 +0300
                Re: Small challenge: sort names scott@slp53.sl.home (Scott Lurndal) - 2026-04-21 18:22 +0000
                Re: Small challenge: sort names Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-22 03:48 +0200
                Re: Small challenge: sort names David Brown <david.brown@hesbynett.no> - 2026-04-22 09:18 +0200
                Re: Small challenge: sort names Michael S <already5chosen@yahoo.com> - 2026-04-22 13:22 +0300
                Re: Small challenge: sort names David Brown <david.brown@hesbynett.no> - 2026-04-22 12:38 +0200
                Re: Small challenge: sort names Michael S <already5chosen@yahoo.com> - 2026-04-22 13:58 +0300
                Re: Small challenge: sort names David Brown <david.brown@hesbynett.no> - 2026-04-22 13:13 +0200
                Re: Small challenge: sort names Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-22 14:53 +0200
                Re: Small challenge: sort names DFS <nospam@dfs.com> - 2026-04-21 16:31 -0400
                Re: Small challenge: sort names Bart <bc@freeuk.com> - 2026-04-21 23:04 +0100
      Re: Small challenge: sort names Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-04-20 14:16 -0700
        An audience of one (Was: Small challenge: sort names) gazelle@shell.xmission.com (Kenny McCormack) - 2026-04-21 13:00 +0000
          Re: An audience of one (Was: Small challenge: sort names) "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-04-21 12:21 -0700
    Re: Small challenge: sort names Rosario19 <Ros@invalid.invalid> - 2026-04-21 05:00 +0200
      Re: Small challenge: sort names Rosario19 <Ros@invalid.invalid> - 2026-04-21 05:06 +0200
  Re: Small challenge: sort names gggggggggggunit <gunitinug@50cent.com> - 2026-04-18 10:19 +0000
    [OT] Shell approach to Re: Small challenge: sort names Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-19 09:35 +0200
      Re: [OT] Shell approach to Re: Small challenge: sort names gazelle@shell.xmission.com (Kenny McCormack) - 2026-04-19 14:18 +0000
        Re: [OT] Shell approach to Re: Small challenge: sort names cross@spitfire.i.gajendra.net (Dan Cross) - 2026-04-19 19:32 +0000
          Re: [OT] Shell approach to Re: Small challenge: sort names Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-04-22 03:34 +0200
  Re: Small challenge: sort names Bonita Montero <Bonita.Montero@gmail.com> - 2026-04-28 06:53 +0200
    Re: Small challenge: sort names gazelle@shell.xmission.com (Kenny McCormack) - 2026-04-28 13:01 +0000

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