find . -name \*.txt -type f -exec /Users/ruess/Downloads/pandoc-2.7.2/bin/pandoc -f mediawiki -t markdown -o {}.md {} \;
then replace all .txt.md files by .txt
and finally run git mv on all .txt files to convert to .md files

jumu/basic_theory.md

+###### Basic theory {#basic_theory}
+
+`   - `[`The`` ``Green`` ``function`` ``method`](The_Green_function_method "wikilink")\
+`     -`[`The`` ``Green`` ``function`` ``approach`](The_Green_function_approach "wikilink")\
+`     -`[`Free`` ``Green`` ``function`](Free_Green_function "wikilink")\
+`     -`[`Boundary`` ``condition`](Boundary_condition "wikilink")\
+`   - `[`Scattering`` ``theory`](Scattering_theory "wikilink")` `\
+`     -`[`Single-site`` ``scattering`](Single-site_scattering "wikilink")\
+`     -`[`Multiple`` ``scattering`](Multiple_scattering "wikilink")\
+`   - `[`KKR`` ``as`` ``Green`` ``function`` ``method`](KKR_as_Green_function_method "wikilink")\
+`     - `[`Dyson`` ``equation`](Dyson_equation "wikilink")\
+`     - `[`KKR`` ``secular`` ``equation`](KKR_secular_equation "wikilink")` `\
+`   - `[`Full`` ``potential`` ``treatment`` ``within`` ``KKR`](Full_potential_treatment_within_KKR "wikilink")\
+`   - `[`Total`` ``energy`](Total_energy "wikilink")\
+`     - `[`Charge`` ``density`](Charge_density "wikilink")\
+`     - `[`Band`` ``energy`](Band_energy "wikilink")\
+`     - `[`Exchange-correlation`` ``energy`](Exchange-correlation_energy "wikilink")