Module normalise 

Pure string-to-string math-body normalisations.

Formatter canonicalisation applies these transforms to rendered output bytes.

Every function in this module takes a body slice and returns an owned String. The opener / closer reconstruction lives in the canonicalise caller — these helpers are pure body transforms.

Brace-balance probing is shared with super::scan so the lint rule, the scanner, and the canonicalise gate agree on what “balanced” means; see body_braces_balanced.

Functions

align_env_body

Lay out an aligning-environment body: split on \\ rows, then on & cells, pad each cell to its column’s max display width, emit with " & " separators and a " \\\n" row break.

body_braces_balanced

Walk body and confirm { / } balance.