lini 0.13.0

Pretty diagrams from plain text, with fine-grained control. Compiles to clean, themeable SVG.
Documentation 
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#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Default)]
pub struct Span {
    pub start: usize,
    pub end: usize,
}

impl Span {
    pub fn new(start: usize, end: usize) -> Self {
        Self { start, end }
    }

    pub fn empty() -> Self {
        Self { start: 0, end: 0 }
    }
}

pub fn line_col(source: &str, offset: usize) -> (usize, usize) {
    let mut line = 1usize;
    let mut col = 1usize;
    for (i, ch) in source.char_indices() {
        if i >= offset {
            return (line, col);
        }
        if ch == '\n' {
            line += 1;
            col = 1;
        } else {
            col += 1;
        }
    }
    (line, col)
}