![](https://img.haomeiwen.com/i1811223/64ba1278f679dac0.png)
-- 去掉首尾所有空格
function trim(s)
return (string.gsub(s, "^%s*(.-)%s*$", "%1"))
end
local s = " space "
local txt = trim(s)
print(txt)
-- 输出 space
-- 去掉首尾所有空格
function trim(s)
return (string.gsub(s, "^%s*(.-)%s*$", "%1"))
end
local s = " space "
local txt = trim(s)
print(txt)
-- 输出 space
本文标题:lua 正则表达式
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