core: Minor change of the gpgme_op_edit semantics.

* src/edit.c (command_handler): Handle special error code.
* src/engine-gpg.c (read_status): Ditto.
* src/engine-gpgsm.c (status_handler): Ditto.
* src/engine-uiserver.c (status_handler): Ditto.
* src/util.h (GPG_ERR_FALSE): Define for older libgpg-error versions.
--

An edit callback may now simply return GPG_ERR_FALSE to indicate that
it did not handled the status code.  GPGME will the do the appropriate
action, which is to send an empty line.

Note that it is highly unlikely that GPG_ERR_FALSE has ever been used
by an application as return value from an edit interactor.

Signed-off-by: Werner Koch <[email protected]>

1 files changed, 8 insertions, 1 deletions

diff --git a/src/engine-uiserver.c b/src/engine-uiserver.c
index 318d32e3..d855c742 100644
--- a/src/engine-uiserver.c
+++ b/src/engine-uiserver.c
@@ -676,6 +676,8 @@ status_handler (void *opaque, int fd)
               char emptystring[1] = {0};
               err = uiserver->status.fnc (uiserver->status.fnc_value,
                                           GPGME_STATUS_EOF, emptystring);
+              if (gpg_err_code (err) == GPG_ERR_FALSE)
+                err = 0; /* Drop special error code.  */
             }
 
 	  if (!err && uiserver->colon.fnc && uiserver->colon.any)
@@ -827,7 +829,12 @@ status_handler (void *opaque, int fd)
 	  if (r >= 0)
 	    {
 	      if (uiserver->status.fnc)
-		err = uiserver->status.fnc (uiserver->status.fnc_value, r, rest);
+                {
+                  err = uiserver->status.fnc (uiserver->status.fnc_value,
+                                              r, rest);
+                  if (gpg_err_code (err) == GPG_ERR_FALSE)
+                    err = 0; /* Drop special error code.  */
+                }
 	    }
 	  else
 	    fprintf (stderr, "[UNKNOWN STATUS]%s %s", line + 2, rest);