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util.pposix: Bind isatty(3)

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Useful for disabling certain behavior, ANSI colors etc when not
connected to a terminal.
This commit is contained in:
Kim Alvefur 2021-07-04 15:11:07 +02:00
parent 6f60a98b16
commit b93398ce79
2 changed files with 11 additions and 0 deletions
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9
util-src/pposix.c
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@ -812,6 +812,13 @@ static int lc_atomic_append(lua_State *L) {
return 3;
}
static int lc_isatty(lua_State *L) {
FILE *f = *(FILE **) luaL_checkudata(L, 1, LUA_FILEHANDLE);
const int fd = fileno(f);
lua_pushboolean(L, isatty(fd));
return 1;
}
/* Register functions */
int luaopen_util_pposix(lua_State *L) {
@ -853,6 +860,8 @@ int luaopen_util_pposix(lua_State *L) {
{ "atomic_append", lc_atomic_append },
{ "isatty", lc_isatty },
{ NULL, NULL }
};