fix script/score.tlu: compare realpath instead of basename

[e-kwsm]

For example texdoc -Il thesis returns lists in arbitrary orders:

$  diff -U1 <(texdoc -Il thesis) <(texdoc -Il thesis)
--- /proc/self/fd/11	2018-08-03 14:20:14.060909785 +0900
+++ /proc/self/fd/12	2018-08-03 14:20:14.060909785 +0900
@@ -33,17 +33,17 @@
    = [de] Example document / Tutorial (German)
-18 /usr/local/texlive/2018/texmf-dist/doc/latex/hagenberg-thesis/examples/HgbArticle/main.pdf
+18 /usr/local/texlive/2018/texmf-dist/doc/latex/hagenberg-thesis/examples/Manual/main.pdf
    = [de] Example document / Tutorial (German)
-19 /usr/local/texlive/2018/texmf-dist/doc/latex/hagenberg-thesis/examples/HgbLabReportDE/main.pdf
+19 /usr/local/texlive/2018/texmf-dist/doc/latex/hagenberg-thesis/examples/HgbInternshipReport/main.pdf
    = [de] Example document / Tutorial (German)
-20 /usr/local/texlive/2018/texmf-dist/doc/latex/hagenberg-thesis/examples/HgbThesisTutorial/main.pdf
+20 /usr/local/texlive/2018/texmf-dist/doc/latex/hagenberg-thesis/examples/HgbLabReportDE/main.pdf
    = [de] Example document / Tutorial (German)
-21 /usr/local/texlive/2018/texmf-dist/doc/latex/hagenberg-thesis/examples/HgbInternshipReport/main.pdf
+21 /usr/local/texlive/2018/texmf-dist/doc/latex/hagenberg-thesis/examples/HgbThesisEN/main.pdf
    = [de] Example document / Tutorial (German)
-22 /usr/local/texlive/2018/texmf-dist/doc/latex/hagenberg-thesis/examples/HgbTermReport/main.pdf
+22 /usr/local/texlive/2018/texmf-dist/doc/latex/hagenberg-thesis/examples/HgbThesisTutorial/main.pdf
    = [de] Example document / Tutorial (German)
-23 /usr/local/texlive/2018/texmf-dist/doc/latex/hagenberg-thesis/examples/Manual/main.pdf
+23 /usr/local/texlive/2018/texmf-dist/doc/latex/hagenberg-thesis/examples/HgbArticle/main.pdf
    = [de] Example document / Tutorial (German)
-24 /usr/local/texlive/2018/texmf-dist/doc/latex/hagenberg-thesis/examples/HgbThesisEN/main.pdf
+24 /usr/local/texlive/2018/texmf-dist/doc/latex/hagenberg-thesis/examples/HgbLabReportEN/main.pdf
    = [de] Example document / Tutorial (German)
-25 /usr/local/texlive/2018/texmf-dist/doc/latex/hagenberg-thesis/examples/HgbLabReportEN/main.pdf
+25 /usr/local/texlive/2018/texmf-dist/doc/latex/hagenberg-thesis/examples/HgbTermReport/main.pdf
    = [de] Example document / Tutorial (German)
# ommitted

There are many packages whose names contain "thesis", and some files of them have the same score (e.g., 1.5 to hagenberg-thesis/examples/hgblabreportde/main.pdf, hagenberg-thesis/examples/hgblabreporten/main.pdf and other 8).
The problem is that sort_doclist compares basenames when scores are same, leading to arbitrary order of files whose basenames are same.

[wtsnjp]

LGTM 👍

Only one thing: could you please update following comment as well? (maybe something like fullpath are better than filename)

-- 3. then lexicographically by filename

[e-kwsm]

Amended.

[e-kwsm]

texdoc/script/score.tlu

Line 237 in b3b2872

else return (a.tree > b.tree)

will be never reached unless full paths conflict.

So the line should be moved up or removed.

[wtsnjp]

unless full paths conflict

I think this will very unlikely to happen, but still not zero persent, so I'll just leave this; not harmful at all.