diff options
| -rw-r--r-- | generic/tclEnv.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/generic/tclEnv.c b/generic/tclEnv.c index 2cb240d..66ddb57 100644 --- a/generic/tclEnv.c +++ b/generic/tclEnv.c @@ -551,7 +551,8 @@ TclGetEnv( * array. * * Results: - * Always returns NULL to indicate success. + * Returns NULL to indicate success, or an error-message if the array + * element being handled doesn't exist. * * Side effects: * Environment variable changes get propagated. If the whole "env" array @@ -609,8 +610,7 @@ EnvTraceProc( const char *value = TclGetEnv(name2, &valueString); if (value == NULL) { - Tcl_UnsetVar2(interp, name1, name2, 0); - return NULL; + return (char *) "no such variable"; } Tcl_SetVar2(interp, name1, name2, value, 0); Tcl_DStringFree(&valueString); |