why does mutt take so long to load my python folder?

[Cameron Simpson]

On 18Nov2022 18:48, Kevin J. McCarthy <kevin at 8t8.us> wrote:
>On Sat, Nov 19, 2022 at 01:16:47PM +1100, Cameron Simpson wrote:
>>On 19Nov2022 08:32, Cameron Simpson <cs at cskk.id.au> wrote:
>>>The issue is my index colouring, specificly this line:
>>>  color index white default  "((~P|%f polyname ~h '^from:.*cameron simpson')) | (~v ~((~P|%f polyname ~h '^from:.*cameron simpson')))"
>
>>I'm wondering if it is the `~h` pattern. That would search every 
>>header, which I presume exceeds the cache?
>
>~h always opens up the message and scans header by header.  It doesn't 
>use the header cache.

Aha. Well that'll do it.

>BTW ~() can also be very expensive.

If you mean: it involves walking the thread trees, I accept that. The 
win of having most threads callapsed but ocrrectly coloured outwieghs 
that. My naive perusing of the mutt code suggests that the thread 
structure itself is in memory, yes?

>>Is there an efficient way to search the _text_ of the `From:` 
>>header?  Not match the from address part, but the comment string 
>>(which is where the "cameron simpson" resides)?
>
>~f scans the display name part of the address in most cases, including 
>for color commands.
>
>If you mean an actual address comment field, e.g. (text), those are 
>considered the display name if none otherwise exists.  But if there is 
>also a display name, the parser discards the comment.

Terminology: I'm taking "display name" to be as from here:

     mailbox = name-addr / addr-spec
     name-addr = [display-name] angle-addr
     angle-addr = [CFWS] "<" addr-spec ">" [CFWS] / obs-angle-addr
     display-name = phrase

from https://www.rfc-wiki.org/wiki/RFC2822. Is there a better RFC 2822 
page? I used to use a nicely formatted tools.ietf.org URL, but that now 
redirects to some RFC author editing ... thing.

In this From: header body:

     Cameron Simpson (a comment) <cs at cskk.id.au>

would `~f "cameron simpson"` match it, and would `~f "comment"` _not_ 
match it?

An example actual header I'm trying to match is this one:

     From: "Cameron Simpson via Discussions on Python.org" <notifications at python1.discoursemail.com>

Anyway, I'll try plain `~f "cameron simnpson"` and see how it goes.

Thanks,
Cameron Simpson <cs at cskk.id.au>