util.human.io: Trim any broken UTF-8 from ellipsis
This should fix basic problems with multi-byte UTF-8 sequences getting
cut in the middle.
Down the rabbit hole we go...
--- a/util/human/io.lua Fri Nov 12 12:14:27 2021 +0100
+++ b/util/human/io.lua Fri Nov 12 12:19:01 2021 +0100
@@ -1,4 +1,5 @@
local array = require "util.array";
+local utf8 = rawget(_G,"utf8") or require"util.encodings".utf8;
local function getchar(n)
local stty_ret = os.execute("stty raw -echo 2>/dev/null");
@@ -96,7 +97,10 @@
end
local function ellipsis(s, width)
- return s:sub(1, width-1) .. "…";
+ if #s <= width then return s; end
+ s = s:sub(1, width - 1)
+ while not utf8.len(s) do s = s:sub(1, -2); end
+ return s .. "…";
end
local function new_table(col_specs, max_width)