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fancy-prompt.lua: allow non-ASCII buffer names 

It may theoretically bite us in the ass with non-UTF-8-compliant
IRC servers, and certainly with double-width characters.
This commit is contained in:
Přemysl Eric Janouch 2020-10-31 15:56:23 +01:00
parent 38c23d0d38
commit 271689da99
Signed by: p
GPG Key ID: A0420B94F92B9493
1 changed files with 5 additions and 4 deletions
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9
plugins/degesch/fancy-prompt.lua
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@ -64,12 +64,13 @@ degesch.hook_prompt (function (hook)
local lines, cols = degesch.get_screen_size ()
x = x .. " " .. active .. string.rep (" ", cols)
-- Readline seems to be broken and completely corrupts the prompt
-- (tested on 7.0.003 Archlinux, 7.0-5 Debian buster)
x = x:gsub("[\128-\255]", "?")
-- Readline 7.0.003 seems to be broken and completely corrupts the prompt.
-- However 8.0.004 seems to be fine with these, as is libedit 20191231-3.1.
--x = x:gsub("[\128-\255]", "?")
-- Cut off extra characters and apply formatting, including the hack.
-- Note that this doesn't count with full-width or zero-width characters.
-- FIXME: this doesn't count with full-width or zero-width characters.
-- We might want to export wcwidth() above term_from_utf8 somehow.
local overflow = utf8.offset (x, cols - 1)
if overflow then x = x:sub (1, overflow) end
x = "\x01\x1b[0;4;1;38;5;16m\x1b[48;5;" .. bg_color .. "m\x02" ..