Erroneous guess about GL constants in bindAttribLocation index parameter

[monfera]

Instead of numbers, values 2...6 are shown as GL primitives, rather than numbers

[JannikGM]

The generic solution is to find the first matching enum for a number (but that is often incorrect).
You'll have to add explicit stringification similar to #212

Another solution could be to improve the stringifaction to only become active for GLenum

[sebavan]

Another solution could be to improve the stringifaction to only become active for GLenum

This would be great indeed, would you mind doing a PR for it, or I ll add the targeted fix over the weekend ?