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[tree] Resolve name truncation issues in TTree::Scan #21383

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[tree] Resolve name truncation issues in TTree::Scan #21383

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36b6acc
[tree] Show truncation with ... in column name headers for Scan()
al-025 Feb 24, 2026
02410bc
[tree] Dynamically resize column widths to fit names for Scan()
al-025 Feb 26, 2026
5038756
[tree] Comment non-obvious column name truncation for Scan()
al-025 Feb 26, 2026
877e4e2
[tree] Update references/tests that use Scan()
al-025 Mar 20, 2026
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14 changes: 7 additions & 7 deletions roottest/root/collection/CATTreeClear.ref
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Original file line number Diff line number Diff line change
@@ -1,12 +1,12 @@
Processing runCATTreeClear.C...
During writing, tree event 1, ca entry 1 is == NULL
***********************************************************************
* Row * Instance * CA.fUniqu * CA.fBits * CA.fName * CA.fTitle *
***********************************************************************
* 0 * 0 * 0 * 50331648 * One * One title *
* 0 * 1 * 0 * 50331648 * One * One title *
* 1 * 0 * 0 * 50331648 * One * New one *
***********************************************************************
**************************************************************************
* Row * Instance * CA.fUniqueID * CA.fBits * CA.fName * CA.fTitle *
**************************************************************************
* 0 * 0 * 0 * 50331648 * One * One title *
* 0 * 1 * 0 * 50331648 * One * One title *
* 1 * 0 * 0 * 50331648 * One * New one *
**************************************************************************
TCA[1] != NULL
CA contains 2 elements
Name: One Title: One title
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60 changes: 30 additions & 30 deletions roottest/root/io/customCollection/customCollection.ref
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Original file line number Diff line number Diff line change
Expand Up @@ -3,34 +3,34 @@ Reading file with just a TTree
Warning in <TClass::Init>: no dictionary for class Content is available
Warning in <TClass::Init>: no dictionary for class DataVectorConcrete is available
Warning in <TClass::Init>: no dictionary for class DataVectorTmplt<Content> is available
***********************************
* Row * Instance * coll.fNam *
***********************************
* 0 * 0 * 7 *
* 0 * 1 * 7 *
* 0 * 2 * 7 *
* 0 * 3 * 7 *
***********************************
***********************************************************************
* Row * Instance * coll.fId * coll.fNam * vec.fId * vec.fName *
***********************************************************************
* 0 * 0 * 0 * name0_4 * 0 * name0_4 *
* 0 * 1 * 1 * name0_4 * 1 * name0_4 *
* 0 * 2 * 2 * name0_4 * 2 * name0_4 *
* 0 * 3 * 3 * name0_4 * 3 * name0_4 *
***********************************************************************
*********************************************
* Row * Instance * coll.fName.Length() *
*********************************************
* 0 * 0 * 7 *
* 0 * 1 * 7 *
* 0 * 2 * 7 *
* 0 * 3 * 7 *
*********************************************
************************************************************************
* Row * Instance * coll.fId * coll.fName * vec.fId * vec.fName *
************************************************************************
* 0 * 0 * 0 * name0_4 * 0 * name0_4 *
* 0 * 1 * 1 * name0_4 * 1 * name0_4 *
* 0 * 2 * 2 * name0_4 * 2 * name0_4 *
* 0 * 3 * 3 * name0_4 * 3 * name0_4 *
************************************************************************
Reading TTree
***********************************
* Row * Instance * coll.fNam *
***********************************
* 0 * 0 * 7 *
* 0 * 1 * 7 *
* 0 * 2 * 7 *
***********************************
***********************************************************************
* Row * Instance * coll.fId * coll.fNam * vec.fId * vec.fName *
***********************************************************************
* 0 * 0 * 0 * name0_3 * 0 * name0_3 *
* 0 * 1 * 1 * name0_3 * 1 * name0_3 *
* 0 * 2 * 2 * name0_3 * 2 * name0_3 *
***********************************************************************
*********************************************
* Row * Instance * coll.fName.Length() *
*********************************************
* 0 * 0 * 7 *
* 0 * 1 * 7 *
* 0 * 2 * 7 *
*********************************************
************************************************************************
* Row * Instance * coll.fId * coll.fName * vec.fId * vec.fName *
************************************************************************
* 0 * 0 * 0 * name0_3 * 0 * name0_3 *
* 0 * 1 * 1 * name0_3 * 1 * name0_3 *
* 0 * 2 * 2 * name0_3 * 2 * name0_3 *
************************************************************************
44 changes: 22 additions & 22 deletions roottest/root/io/customCollection/execWriteCustomCollection.ref
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Original file line number Diff line number Diff line change
Expand Up @@ -3,13 +3,13 @@ Writing
values: 0 / 3 : name0_3
values: 1 / 3 : name1_3
values: 2 / 3 : name2_3
***********************************************************************
* Row * Instance * coll.fId * coll.fNam * vec.fId * vec.fName *
***********************************************************************
* 0 * 0 * 0 * name0_3 * 0 * name0_3 *
* 0 * 1 * 1 * name0_3 * 1 * name0_3 *
* 0 * 2 * 2 * name0_3 * 2 * name0_3 *
***********************************************************************
************************************************************************
* Row * Instance * coll.fId * coll.fName * vec.fId * vec.fName *
************************************************************************
* 0 * 0 * 0 * name0_3 * 0 * name0_3 *
* 0 * 1 * 1 * name0_3 * 1 * name0_3 *
* 0 * 2 * 2 * name0_3 * 2 * name0_3 *
************************************************************************
Writing file with just a TTree.
Reading
values: 0 / 3 : name0_3
Expand All @@ -19,24 +19,24 @@ Reading TTree
values: 0 / 3 : name0_3
values: 1 / 3 : name1_3
values: 2 / 3 : name2_3
***********************************************************************
* Row * Instance * coll.fId * coll.fNam * vec.fId * vec.fName *
***********************************************************************
* 0 * 0 * 0 * name0_3 * 0 * name0_3 *
* 0 * 1 * 1 * name0_3 * 1 * name0_3 *
* 0 * 2 * 2 * name0_3 * 2 * name0_3 *
***********************************************************************
************************************************************************
* Row * Instance * coll.fId * coll.fName * vec.fId * vec.fName *
************************************************************************
* 0 * 0 * 0 * name0_3 * 0 * name0_3 *
* 0 * 1 * 1 * name0_3 * 1 * name0_3 *
* 0 * 2 * 2 * name0_3 * 2 * name0_3 *
************************************************************************
Reading file with just a TTree
values: 0 / 4 : name0_4
values: 1 / 4 : name1_4
values: 2 / 4 : name2_4
values: 3 / 4 : name3_4
***********************************************************************
* Row * Instance * coll.fId * coll.fNam * vec.fId * vec.fName *
***********************************************************************
* 0 * 0 * 0 * name0_4 * 0 * name0_4 *
* 0 * 1 * 1 * name0_4 * 1 * name0_4 *
* 0 * 2 * 2 * name0_4 * 2 * name0_4 *
* 0 * 3 * 3 * name0_4 * 3 * name0_4 *
***********************************************************************
************************************************************************
* Row * Instance * coll.fId * coll.fName * vec.fId * vec.fName *
************************************************************************
* 0 * 0 * 0 * name0_4 * 0 * name0_4 *
* 0 * 1 * 1 * name0_4 * 1 * name0_4 *
* 0 * 2 * 2 * name0_4 * 2 * name0_4 *
* 0 * 3 * 3 * name0_4 * 3 * name0_4 *
************************************************************************
(int) 0
20 changes: 10 additions & 10 deletions roottest/root/io/datamodelevolution/00/test2.ref
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Original file line number Diff line number Diff line change
Expand Up @@ -34,16 +34,16 @@ ACache::fValues[0] 1
ACache::fValues[1] 1.01
ACache::fValues[2] 1.02
TTree::Scan object branch
***********************************************************************************************************
* Row * Instance * obj.x * obj.y * obj.c * obj.persi * obj.fN * obj.fArra * obj.fValu *
***********************************************************************************************************
* 0 * 0 * 6 * 7 * 13 * 0 * 6 * 10 * 0 *
* 0 * 1 * 6 * 7 * 13 * 0 * 6 * 11 * 0.0099999 *
* 0 * 2 * 6 * 7 * 13 * 0 * 6 * 12 * 0.0199999 *
* 0 * 3 * 6 * 7 * 13 * 0 * 6 * 13 * *
* 0 * 4 * 6 * 7 * 13 * 0 * 6 * 14 * *
* 0 * 5 * 6 * 7 * 13 * 0 * 6 * 15 * *
***********************************************************************************************************
****************************************************************************************************************
* Row * Instance * obj.x * obj.y * obj.c * obj.persist * obj.fN * obj.fArray * obj.fValues *
****************************************************************************************************************
* 0 * 0 * 6 * 7 * 13 * 0 * 6 * 10 * 0 *
* 0 * 1 * 6 * 7 * 13 * 0 * 6 * 11 * 0.009999999 *
* 0 * 2 * 6 * 7 * 13 * 0 * 6 * 12 * 0.019999999 *
* 0 * 3 * 6 * 7 * 13 * 0 * 6 * 13 * *
* 0 * 4 * 6 * 7 * 13 * 0 * 6 * 14 * *
* 0 * 5 * 6 * 7 * 13 * 0 * 6 * 15 * *
****************************************************************************************************************
TTree::GetEntry object branch
ACache::x 6
ACache::y 7
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20 changes: 10 additions & 10 deletions roottest/root/io/datamodelevolution/00/test3.ref
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Original file line number Diff line number Diff line change
Expand Up @@ -34,16 +34,16 @@ Axis::fArray[8] 18
ACache::fValues[0] 0
ACache::fValues[1] 0.01
ACache::fValues[2] 0.02
***********************************************************************************************************
* Row * Instance * obj.x * obj.y * obj.c * obj.persi * obj.fN * obj.fArra * obj.fValu *
***********************************************************************************************************
* 0 * 0 * 6 * 7 * 13 * 0 * 6 * 10 * 0 *
* 0 * 1 * 6 * 7 * 13 * 0 * 6 * 11 * 0.0099999 *
* 0 * 2 * 6 * 7 * 13 * 0 * 6 * 12 * 0.0199999 *
* 0 * 3 * 6 * 7 * 13 * 0 * 6 * 13 * *
* 0 * 4 * 6 * 7 * 13 * 0 * 6 * 14 * *
* 0 * 5 * 6 * 7 * 13 * 0 * 6 * 15 * *
***********************************************************************************************************
****************************************************************************************************************
* Row * Instance * obj.x * obj.y * obj.c * obj.persist * obj.fN * obj.fArray * obj.fValues *
****************************************************************************************************************
* 0 * 0 * 6 * 7 * 13 * 0 * 6 * 10 * 0 *
* 0 * 1 * 6 * 7 * 13 * 0 * 6 * 11 * 0.009999999 *
* 0 * 2 * 6 * 7 * 13 * 0 * 6 * 12 * 0.019999999 *
* 0 * 3 * 6 * 7 * 13 * 0 * 6 * 13 * *
* 0 * 4 * 6 * 7 * 13 * 0 * 6 * 14 * *
* 0 * 5 * 6 * 7 * 13 * 0 * 6 * 15 * *
****************************************************************************************************************
Axis::x 6
Axis::y 7
Axis::z 6070
Expand Down
10 changes: 5 additions & 5 deletions roottest/root/io/emulated/readAbstract.ref
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
Processing readAbstract.cxx+...
Warning in <TClass::Init>: no dictionary for class Concrete is available
************************************
* Row * obj.Abstr * obj.fData *
************************************
* 0 * 3 * 2 *
************************************
*******************************************
* Row * obj.Abstract.fId * obj.fData *
*******************************************
* 0 * 3 * 2 *
*******************************************
22 changes: 11 additions & 11 deletions roottest/root/io/newstl/Emulvector.ref
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Original file line number Diff line number Diff line change
@@ -1,12 +1,12 @@
Processing runEmulvector.C...
***********************************************************************
* Row * Instance * evtNr.evt * runNr.run * tag * itag *
***********************************************************************
* 0 * 0 * 1 * 1 * 1 * 1 *
* 0 * 1 * 1 * 1 * 2 * 2 *
* 0 * 2 * 1 * 1 * 3 * 3 *
* 0 * 3 * 1 * 1 * 4 * 4 *
* 1 * 0 * 2 * 1 * 1 * 1 *
* 1 * 1 * 2 * 1 * 3 * 3 *
* 1 * 2 * 2 * 1 * 4 * 4 *
***********************************************************************
***************************************************************************
* Row * Instance * evtNr.evtNr * runNr.runNr * tag * itag *
***************************************************************************
* 0 * 0 * 1 * 1 * 1 * 1 *
* 0 * 1 * 1 * 1 * 2 * 2 *
* 0 * 2 * 1 * 1 * 3 * 3 *
* 0 * 3 * 1 * 1 * 4 * 4 *
* 1 * 0 * 2 * 1 * 1 * 1 *
* 1 * 1 * 2 * 1 * 3 * 3 *
* 1 * 2 * 2 * 1 * 4 * 4 *
***************************************************************************
22 changes: 11 additions & 11 deletions roottest/root/io/newstl/emulvector.root.ref
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Original file line number Diff line number Diff line change
@@ -1,12 +1,12 @@
Processing writetest_emulvector.C...
***********************************************************************
* Row * Instance * evtNr.evt * runNr.run * tag * itag *
***********************************************************************
* 0 * 0 * 1 * 1 * 1 * 1 *
* 0 * 1 * 1 * 1 * 2 * 2 *
* 0 * 2 * 1 * 1 * 3 * 3 *
* 0 * 3 * 1 * 1 * 4 * 4 *
* 1 * 0 * 2 * 1 * 1 * 1 *
* 1 * 1 * 2 * 1 * 3 * 3 *
* 1 * 2 * 2 * 1 * 4 * 4 *
***********************************************************************
***************************************************************************
* Row * Instance * evtNr.evtNr * runNr.runNr * tag * itag *
***************************************************************************
* 0 * 0 * 1 * 1 * 1 * 1 *
* 0 * 1 * 1 * 1 * 2 * 2 *
* 0 * 2 * 1 * 1 * 3 * 3 *
* 0 * 3 * 1 * 1 * 4 * 4 *
* 1 * 0 * 2 * 1 * 1 * 1 *
* 1 * 1 * 2 * 1 * 3 * 3 *
* 1 * 2 * 2 * 1 * 4 * 4 *
***************************************************************************
28 changes: 14 additions & 14 deletions roottest/root/io/treeForeign/testForeignDrawZLIB.ref
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Expand Up @@ -35,17 +35,17 @@ Warning in <TClass::Init>: no dictionary for class MyClass is available
* 0 * 99 *
* 1 * 99 *
************************
************************
* Row * arr.chunk *
************************
* 0 * 1 *
* 1 * 1 *
************************
***********************************
* Row * Instance * arr.chunk *
***********************************
* 0 * 0 * 1 *
* 0 * 1 * 2 *
* 1 * 0 * 1 *
* 1 * 1 * 2 *
***********************************
*********************************
* Row * arr.chunk.myvar[0] *
*********************************
* 0 * 1 *
* 1 * 1 *
*********************************
*****************************************
* Row * Instance * arr.chunk.myvar *
*****************************************
* 0 * 0 * 1 *
* 0 * 1 * 2 *
* 1 * 0 * 1 *
* 1 * 1 * 2 *
*****************************************
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