Subject: Re: [PATCH][DOC][MINOR] Fix incorrect lexeme limit in textsearch docs

From: Dharin Shah <[email-masked]>
Date: Fri, 2 Jan 2026 12:38:25 +0100

Hello,

Gentle ping on the textsearch docs patch. Happy to address any feedback

Thanks,
Dharin

On Sat, Dec 27, 2025 at 10:09 PM Dharin Shah <[email-masked]> wrote:

> Hello,
>
> A minor doc patch for this page
> https://www.postgresql.org/docs/current/textsearch-limitations.html
> and this line
>
> *- The number of lexemes must be less than 2^64*
>
> Docs wrongly claim "lexemes must be < 2^64" but the actual constraint is
> 1 MB total storage (MAXSTRPOS), and no 2^64 check exists in the code.
>
> From src/include/tsearch/ts_type.h:
>
>>     #define MAXSTRPOS ( (1<<20) - 1)   // 1,048,575 bytes
>>
>>     typedef struct {
>>         int32  size;     // number of lexemes
>>         ...
>>     } TSVectorData;
>
>
>  The attached patch:
> - Removes the incorrect 2^64 claim
> - Clarifies this means "distinct lexemes in a single tsvector value"
>
> Thanks,
> Dharin
>