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-rw-r--r--src/lstrlib.js11
1 files changed, 7 insertions, 4 deletions
diff --git a/src/lstrlib.js b/src/lstrlib.js
index e744853..bf12f2e 100644
--- a/src/lstrlib.js
+++ b/src/lstrlib.js
@@ -191,10 +191,13 @@ const num2straux = function(x) {
const lua_number2strx = function(L, fmt, x) {
let buff = num2straux(x);
- if (fmt[SIZELENMOD] === 'A'.charCodeAt(0)) {
- for (let i = 0; i < buff.length; i++)
- buff[i] = String.fromCharCode(buff[i]).toUpperCase().charCodeAt(0);
- } else if (fmt[SIZELENMOD] !== 'a'.charCodeAt(0))
+ if (fmt[SIZELENMOD] === 65 /* 'A'.charCodeAt(0) */) {
+ for (let i = 0; i < buff.length; i++) {
+ let c = buff[i];
+ if (c >= 97) /* toupper */
+ buff[i] = c & 0xdf;
+ }
+ } else if (fmt[SIZELENMOD] !== 97 /* 'a'.charCodeAt(0) */)
luaL_error(L, to_luastring("modifiers for format '%%a'/'%%A' not implemented"));
return buff;
};