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Insert an alignment marker before = or \\sim

Source: R/render-latex.R
align_at.Rd

Inserts a single & immediately before the first = (not part of \=) or the first \sim token in a LaTeX equation line. Used to add aligned-style alignment markers to the lines carried by x$components.

Usage

align_at(line)

Arguments

line

A character string (one LaTeX equation line, no outer math delimiters).

Value

The line with & inserted before the alignment point. If no = or \sim is found the line is returned unchanged.