Prevent spaces in custom entry (#14091)

* #14088 prevent custom entry types with spaces

* #14088 update changelog

* #14088 resolve LocalizationConsistencyTest

* try rerun automated tests

* remove trailing

Author: am167

CHANGELOG.md

@@ -154,6 +154,7 @@ Note that this project **does not** adhere to [Semantic Versioning](https://semv
 - We fixed an issue where ignoring of subdirectories via `.gitingore` patterns did not work in the "Find unlinked files dialog". [forum#5425](https://discourse.jabref.org/t/set-list-of-ignored-folders-paths/5425/6)
 - We fixed an issue where the "Applications to push entries to" list in the preferences was not sorted alphabetically. [#14058](https://github.com/JabRef/jabref/issues/14058)
 - We fixed an issue where notice text in AI chat was not automatically refreshed when the user changed preferences.[#13855](https://github.com/JabRef/jabref/issues/13855)
+- We fixed an issue where the user could add custom entry types with spaces in their names. [#14088](https://github.com/JabRef/jabref/issues/14088)
 
 ### Removed
 

jabgui/src/main/java/org/jabref/gui/preferences/customentrytypes/CustomEntryTypesTabViewModel.java

@@ -72,8 +72,8 @@ public CustomEntryTypesTabViewModel(BibDatabaseMode mode,
 
         entryTypeValidator = new FunctionBasedValidator<>(
                 entryTypeToAdd,
-                StringUtil::isNotBlank,
-                ValidationMessage.error(Localization.lang("Entry type cannot be empty. Please enter a name.")));
+                input -> StringUtil.isNotBlank(input) && !input.contains(" "),
+                ValidationMessage.error(Localization.lang("Entry type cannot be empty and must not contain spaces.")));
         fieldValidator = new FunctionBasedValidator<>(
                 newFieldToAdd,
                 input -> (input != null) && StringUtil.isNotBlank(FieldTextMapper.getDisplayName(input)),

jablib/src/main/resources/l10n/JabRef_en.properties

@@ -2268,7 +2268,7 @@ Remove\ entry\ type=Remove entry type
 Remove\ field\ %0\ from\ currently\ selected\ entry\ type=Remove field %0 from currently selected entry type
 Optional=Optional
 Required=Required
-Entry\ type\ cannot\ be\ empty.\ Please\ enter\ a\ name.=Entry type cannot be empty. Please enter a name.
+Entry\ type\ cannot\ be\ empty\ and\ must\ not\ contain\ spaces.=Entry type cannot be empty and must not contain spaces.
 Field\ cannot\ be\ empty.\ Please\ enter\ a\ name.=Field cannot be empty. Please enter a name.
 
 Capitalize\ current\ word=Capitalize current word