bug#70231: Performance issue on sort with zero-sized pseudo files

[Paul Eggert]

On 2024-04-06 03:09, Pádraig Brady wrote:
> I'll apply this.

Heh, I beat you to it by looking for similar errors elsewhere and 
applying the attached patches to fix the issues I found. None of them 
look like serious bugs.

> BTW we should improve sort buffer handling in general

Oh yes.

PS. My current little task is to get i18n to work better with 'sort'. 
Among other things I want Unicode-style full case folding.

0001-cat-don-t-trust-st_size-on-proc-files.patch
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0002-dd-don-t-trust-st_size-on-proc-files.patch
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0003-sort-don-t-trust-st_size-on-proc-files.patch
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0004-split-don-t-trust-st_size-on-proc-files.patch
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