Show detailed error message if writing tags fails

NEWS

@@ -9,6 +9,7 @@ ncmpcpp-0.8 (????-??-??)
 * The list of lyrics fetchers can now be set via configuration file.
 * Lyrics can now be fetched for songs with no tags.
 * libcurl dependency is no longer optional.
+* When an attempt to write tags fails, show detailed error message.
 
 ncmpcpp-0.7.7 (2016-10-31)
 * Fixed compilation on 32bit platforms.

src/actions.cpp

@@ -1392,8 +1392,8 @@ void EditLibraryTag::run()
 			if (!Tags::write(ms))
 			{
 				success = false;
-				const char msg[] = "Error while updating tags in \"%1%\"";
-				Statusbar::printf(msg, wideShorten(ms.getURI(), COLS-const_strlen(msg)));
+				Statusbar::printf("Error while writing tags to \"%1%\": %2%",
+				                  ms.getName(), strerror(errno));
 				s.finish();
 				break;
 			}

src/tag_editor.cpp

@@ -806,8 +806,8 @@ void TagEditor::runAction()
 				Statusbar::printf("Writing tags in \"%1%\"...", (*it)->getName());
 				if (!Tags::write(**it))
 				{
-					const char msg[] = "Error while writing tags in \"%1%\"";
-					Statusbar::printf(msg, wideShorten((*it)->getURI(), COLS-const_strlen(msg)).c_str());
+					Statusbar::printf("Error while writing tags to \"%1%\": %2%",
+					                  (*it)->getName(), strerror(errno));
 					success = 0;
 					break;
 				}

src/tiny_tag_editor.cpp

@@ -172,7 +172,7 @@ void TinyTagEditor::runAction()
 			}
 		}
 		else
-			Statusbar::print("Error while writing tags");
+			Statusbar::printf("Error while writing tags: %1%", strerror(errno));
 	}
 	if (option > 21)
 		m_previous_screen->switchTo();