__m_getenv
LEXTERN char *__m_getenv(char const *); /* Library safe getenv() */
#define m_tempname(code) tempnam(__m_getenv("TMPDIR"), (code))
if ((e = __m_getenv("VARIANTS")) == NULL || *e == '\0')
terminfo = __m_getenv("TERMINFO");
if ((env = __m_getenv("LINES")) != (char *) 0) {
if ((env = __m_getenv("COLUMNS")) != (char *) 0) {
if (command_character != (char *) 0 && __m_getenv("CC") != (char *) 0)
CC = *__m_getenv("CC");