fixes for the debug report

[quentin]

• Fix bad characters in diffs (EOF character was copied).
• Fix syntax highlighting of souffle diffs.
• Add syntax highlighting of souffle RAM diffs.

There is still the issue of graphs being printed as text instead of svg figures since #2092, because the code calls:

souffle/src/ast/analysis/PrecedenceGraph.cpp

Line 77 in 4a1393f

void PrecedenceGraphAnalysis::print(std::ostream& os) const {

Instead of:

souffle/src/ast/analysis/PrecedenceGraph.cpp

Line 83 in 4a1393f

void PrecedenceGraphAnalysis::printHTML(std::ostream& os) const {

[codecov]

Codecov Report

Merging #2283 (b28fecb) into master (8dd2354) will increase coverage by 0.00%.
The diff coverage is 26.31%.

@@           Coverage Diff           @@
##           master    #2283   +/-   ##
=======================================
  Coverage   76.80%   76.81%           
=======================================
  Files         455      455           
  Lines       28658    28664    +6     
=======================================
+ Hits        22011    22017    +6     
  Misses       6647     6647           

Impacted Files	Coverage Δ
src/include/souffle/utility/FileUtil.h	62.96% <0.00%> (+0.57%)	⬆️
src/ram/StringConstant.h	72.72% <0.00%> (ø)
src/reports/DebugReport.cpp	15.90% <0.00%> (-0.37%)	⬇️
src/ast/transform/SemanticChecker.cpp	96.98% <100.00%> (+0.03%)	⬆️
...ouffle/datastructure/ConcurrentInsertOnlyHashMap.h	82.11% <0.00%> (-0.82%)	⬇️
src/include/souffle/datastructure/BTree.h	98.31% <0.00%> (+0.42%)	⬆️

[b-scholz]

Thanks for the fix!