I began this question because I couldn't find an answer, but then I looked into closed issues at neomutt and found a fix, which is simple, but as it hasn't yet propagated into neomutt's documentation, I'm still posting this question, along with the answer.
These are my relevant neomutt configuration settings for one of my email accounts:
# Sidebar mappings
set sidebar_visible = yes
set sidebar_width = 22
set sidebar_short_path = yes
set sidebar_next_new_wrap = yes
set mail_check_stats
set sidebar_format = '%B%?F? [%F]?%* %?N?%N/? %?S?%S?'
bind index,pager B sidebar-toggle-visible
mailboxes
set folder = "/home/jo/.local/share/mail/live"
mailboxes "=Archive" "=Deleted" "=Drafts" "=INBOX" "=Junk" "=Sent" "=Waiting"
virtual-mailboxes "All" "notmuch://?query=tag:live"
macro index,pager gl "<change-vfolder>All<enter>" "go to All"
virtual-mailboxes "Aude" "notmuch://?query=Aude" # this line is temporarily added as an additional test
Up until about several weeks ago, my neomutt sidebar would look like this:
Archive 491│
Deleted 3│
Drafts │
INBOX 8/ 9│
Junk │
Sent │
Waiting 1│
All 9/ 565│
But that last line, the "All" definition now appears like this (with the temporary "Aude" test coming after it):
query=tag:live 9/ 565│
query=Aude 1/ 251│
You can see that the definition, "All", or the test case "Aude" is now not showing, but is replaced by what comes after notmuch://? in my configuration. My macro gl still works, showing me the contents of my virtual mailbox "All".
I seem to be still following exactly Notmuch Feature
6 Commands
virtual-mailboxes description notmuch-URI { description notmuch-URI ...}
unvirtual-mailboxes{ * | mailbox ... }
virtual-mailboxesis like themailboxescommand, except that it takes a description. The mailbox will be watched for new mail and will appear in the sidebar.
So there seems to've been, several weeks ago, some change in neomutt's that's broken this functionality, or else I'm missing something?
