Improve error reporting in dc-qcmd.

diff --git a/lib/guile/dolcon-guile.c b/lib/guile/dolcon-guile.c
index 2b3de3b..e3e6db8 100644 (file)
--- a/lib/guile/dolcon-guile.c
+++ b/lib/guile/dolcon-guile.c
@@ -262,7 +262,17 @@ static SCM scm_dc_qcmd(SCM argv, SCM callback)
     dc_freewcsarr(toks);
     if(cmd != NULL)
        free(cmd);
-    return(scm_from_int(tag));
+    if(tag == -1) {
+       if(errno == ENOSYS) {
+           scm_error(scm_str2symbol("no-such-cmd"), "dc-qcmd", "Invalid command name", SCM_EOL, SCM_BOOL_F);
+       } else if(errno == EINVAL) {
+           scm_error(scm_str2symbol("illegal-escape"), "dc-qcmd", "Invalid escape sequence", SCM_EOL, SCM_BOOL_F);
+       } else {
+           scm_syserror("dc-qcmd");
+       }
+    } else {
+       return(scm_from_int(tag));
+    }
 }
 
 static void login_scmcb(int err, wchar_t *reason, struct scmcb *scmcb)