A new version of DTL-internal-sources was added to project The Inbox:
http://source.squeak.org/inbox/DTL-internal-sources-dtl.10.mcz

==================== Summary ====================

Name: DTL-internal-sources-dtl.10
Author: dtl
Time: 24 January 2022, 5:42:48.765374 pm
UUID: d241131f-2711-46f2-8b32-c9d8efa8c853
Ancestors: DTL-internal-sources-dtl.9

Fix CompressedSources class>>internalizeSources: preference setter. Close source files before reopening, and do nothing if method parameter is nil.

=============== Diff against DTL-internal-sources-dtl.9 ===============

Item was changed:
  ----- Method: CompressedSources class>>internalizeSources: (in category 'accessing') -----
  internalizeSources: internalize
  
  	internalize
+ 		ifNotNil: [internalize
+ 				ifTrue: [CachedSources := self fromSourceFileArray position: 0]
+ 				ifFalse: [CachedSources := nil].
+ 			Smalltalk closeSourceFiles; openSourceFiles]!
- 		ifTrue: [CachedSources := self fromSourceFileArray position: 0]
- 		ifFalse: [CachedSources := nil].
- 	Smalltalk openSourceFiles.
- !