Lua 5.1 Reference Manual

Errata

Inserted text, deleted text, and corrected text have been marked in color.

• page 18, section 2.8:
  (although multiple tables and userdata can share a same table as their metatable);
• page 25, section 2.11:
  The weakness of a table is controlled by the value of the __mode field of its metatable.
• page 34, section 3.7, lua_gc entry:
  LUA_GCSETSTEPMUL: sets data/100 as the new value for the step multiplier ...
• page 36, section 3.7, lua_Integer entry:
  ... which is usually the largest signed integral type the machine handles "comfortably".
• page 37, section 3.7, before lua_isnumber entry:

  ---

  lua_isnone

  int lua_isnone (lua_State *L, int index);

  Returns 1 if the the given acceptable index is not valid (that is, it refers to an element outside the current stack), and 0 otherwise.

  ---

  lua_isnoneornil

  int lua_isnoneornil (lua_State *L, int index);

  Returns 1 if the the given acceptable index is not valid (that is, it refers to an element outside the current stack) or if the value at this index is nil, and 0 otherwise.

• page 40, section 3.7, lua_pcall entry:
  int lua_pcall (lua_State *L, int nargs, int nresults, int errfunc);
• page 67, section 5.1, getfenv entry:

  getfenv ([f])

• page 75, section 5.4, string.format entry:
  This function does not accept string values containing embedded zeros, except as arguments to the q option.
• page 75, section 5.4, string.gmatch entry:
  For this function, a '^' at the start of a pattern does not work as an anchor, as this would prevent the iteration.
• page 76, section 5.4, string.gsub entry:
  x = string.gsub("$name-$%version.tar.gz", "%$(%w+)", t)
• page 79, section 5.5, table.concat entry:
  Given an array where all elements are strings or numbers, returns ...
• page 83, section 5.7, introduction:
  (plus an error message as a second result and a system-dependent error code as a third result)
• page 86, section 5.7, file:setvbuf entry:
  For the last two cases, sizes specifies the size of the buffer, in bytes.
• page 87, section 5.8, os.setlocale entry:
  If locale is the empty string, the current locate is set to an implementation-defined native locale. If locale is the string "C", the current locate is set to the standard C locale.