Fix #6149: LaTeX: :index: role titles causes build error of LaTeX

[tk0miya]

Feature or Bugfix

• Bugfix

Purpose

• refs: "Use of \@icentercr doesn't match its definition." error building latexpdf #6149 and Fix 'Use of \@icentercr doesn't match its definition.' LaTeX build crash #6150

[codecov]

Codecov Report

Merging #6152 into 1.8 will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##              1.8    #6152      +/-   ##
==========================================
+ Coverage   82.25%   82.25%   +<.01%     
==========================================
  Files         308      308              
  Lines       40678    40690      +12     
  Branches     6284     6287       +3     
==========================================
+ Hits        33458    33471      +13     
  Misses       5832     5832              
+ Partials     1388     1387       -1

Impacted Files	Coverage Δ
sphinx/builders/latex/__init__.py	76.82% <ø> (ø)	⬆️
tests/test_build_latex.py	95.31% <100%> (+0.02%)	⬆️
sphinx/builders/latex/transforms.py	92.46% <100%> (+0.24%)	⬆️
sphinx/builders/html.py	82.95% <0%> (+0.09%)	⬆️

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[jfbu]

LGTM! I only commented on a docstring. There is not too much time penalty from another transform?

[tk0miya]

There is not too much time penalty from another transform?

It takes 0.04-0.05 seconds for our Sphinx document. docutils' transform process is very lightweight. So no worries :-)

[jfbu]

There is not too much time penalty from another transform?

It takes 0.04-0.05 seconds for our Sphinx document. docutils' transform process is very lightweight. So no worries :-)

good :)

[jfbu]

LGTM!

[tk0miya]

Thank you always :-)