-- A table to keep the lines in this buffer, so we can process them all at
-- once at the end.
local lines
--- A counter to keep track of the mininum amount of indentation found in each
--- display.
-local min_indent
-- Some helper functions
local function ltrim(s)
-- Capture all lines, without generating any output
function vis.begin_of_display()
lines = {}
- min_indent = nil
end
function vis.begin_of_line(n)
-- Don't generate output here
end
function vis.flush_line(str, nested)
- -- Keep track of the minimum indent level of all lines. Note that we don't
- -- look at empty lines, of course.
- indent = utf.len(utf.match(str, "^%s*"))
- -- Find the lowest indent (but don't count empty lines)
- if (not min_indent or indent < min_indent) then
- min_indent = indent
- end
-
table.insert(lines, str)
-- Don't generate output here
end
-- We do the actual work here. Process all the lines in the buffer and
-- generate output for them.
function vis.end_of_display()
- -- Strip indent that is present on every line
- min_indent = min_indent or 0
- for i = 1,#lines do
- lines[i] = utf.sub(lines[i], min_indent + 1)
- end
-
-- Find the horizontal rule, and see how long it is.
len = nil
for i = 1,#lines do