${current_buffer} in buflist.look.display_conditions has no effect

[oakkitten]

Bug summary

${current_buffer} in buflist.look.display_conditions has no effect even though the documentation says it should.

Steps to reproduce

1. run /set buflist.look.display_conditions "${current_buffer}"

Current behavior

Nothing shows in buflist

Expected behavior

Current buffer shows

Suggested solutions

Fix this

Additional information

I think these bug templates are kinda dumb

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• WeeChat version: a906afc3d7281683799f8b32ca5d5bc06df75f8f
• OS, distribution and version: Raspbian GNU/Linux 9 (stretch) Linux 4.19.42-v7+ armv7l GNU/Linux

[flashcode]

In fact, the doc is wrong. The conditions are evaluated without extra variables, because these variables are defined after, only if conditions are met, for speed reasons (computing all variables has a cost, and if conditions is false, it's better to not set them).
So I'll fix the /help buflist and mention the allowed variables in /help buflist.look.display_conditions.

[flashcode]

Reopening the issue, I'll finally use all the variables in the option buflist.look.display_conditions. This will just be a bit slower in case a buffer is not defined, but it should rarely happen.