Commit: 07b9084ecd9f17de20d5b84a0b60583bc88b29b5
Author: Alexander Gavrilov
Date:   Tue Jun 22 16:38:26 2021 +0300
Branches: temp-angavrilov
https://developer.blender.org/rB07b9084ecd9f17de20d5b84a0b60583bc88b29b5

Temporary Hack: provide B-Bone scale versioning for files with old patch.

Run the versioning code for the conversion of bbone scale to an xyz
vector if it has fields that correspond to the old version of the
patch before that change requiring versioning.

The actual Y (length) scale value from the old patch isn't versioned
and will be lost, requiring manual fixing.

===================================================================

M       source/blender/blenloader/intern/versioning_300.c

===================================================================

diff --git a/source/blender/blenloader/intern/versioning_300.c 
b/source/blender/blenloader/intern/versioning_300.c
index 14204479849..4664ea8d15c 100644
--- a/source/blender/blenloader/intern/versioning_300.c
+++ b/source/blender/blenloader/intern/versioning_300.c
@@ -1792,7 +1792,8 @@ void blo_do_versions_300(FileData *fd, Library 
*UNUSED(lib), Main *bmain)
     }
 
     /* Initialize length-wise scale B-Bone settings. */
-    if (!DNA_struct_elem_find(fd->filesdna, "Bone", "int", "bbone_flag")) {
+    if (!DNA_struct_elem_find(fd->filesdna, "Bone", "int", "bbone_flag") ||
+        DNA_struct_elem_find(fd->filesdna, "Bone", "float", "scale_in_len")) {
       /* Update armature data and pose channels. */
       LISTBASE_FOREACH (bArmature *, arm, &bmain->armatures) {
         do_version_bones_bbone_len_scale(&arm->bonebase);

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