TPad Print() Title option issue

[ankar]

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Description

The TPad::Print() has the possibility to specify the page title string for the table of content, which ease the navigation of generated multi-page PDF files. It works great, except of the very last page.

All in all, the issue is the "Title:name" is not respected for the very last page of pdf generated with TPad::Print() .

Reproducer

Please see below the script which reproduce the problem:

$ cat title.cxx

# run as root -b -q -l title.cxx

#include "TCanvas.h"
#include "TH1.h"

void title()
{
  TH1I bgoplot("bgoplot", "BGO;Energy, MeV;#nevents", 150, -3, 3);
  bgoplot.FillRandom("gaus", 1000);

  TH1I ecalplot("ecalplot", "ECAL;Energy, GeV;#nevents", 150, -3, 3);
  ecalplot.FillRandom("gaus", 1000);

  TCanvas c("plots", "plots");
  c.Print("plots.pdf[");

  c.Clear();
  bgoplot.Draw();
  c.Print("plots.pdf", "Title:BGO");

  c.Clear();
  ecalplot.Draw();
  c.Print("plots.pdf", "Title:ECAL");

  c.Print("plots.pdf]");
}

Here is the screenshot - the table of contents label for page2 should be "ECAL":

ROOT version

$ ssh lxplus

$ root --version
ROOT Version: 6.38.00
Built for linuxx8664gcc on Dec 18 2025, 00:00:00
From tags/6-38-00@6-38-00

Installation method

cern lxplus

Operating system

rhel9.7

Additional context

No response

[ferdymercury]

Fix here: #21245

[ferdymercury]

Reopening since linked PR is not merged yet

[dpiparo]

Thanks for reopening. Indeed that was a mistake.

[couet]

oops .. sorry I thought it was merged.. Now merged.