hledger-web register does not show From/To accounts

[thielema]

The Register page of current hledger-web-40 with an inacct query does not show To/From accounts for many transactions, even if there are only two accounts involved in the transaction, i.e. the To/From accounts column needs to display only one account.

Last time it worked correctly in hledger-web-1.32, but fails in hledger-web-1.33.

[thielema]

With git-bisect I identified the commit 2a99b3d.

[thielema]

Problem is that the rewritten code with tailDef always removes the last account, whereas the original intention was to replace all accounts by a comma except the last one.
I have a patch here using NonEmpty. I'll submit it shortly.