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propagate the terminal's displaysize to the IOContext used by the REPL #55499

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propagate the terminal's displaysize to the IOContext used by the REPL #55499

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7 changes: 6 additions & 1 deletion base/strings/io.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -208,7 +208,12 @@ function show(
get(io, :limit, false)::Bool || return show(io, str)
limit = max(20, displaysize(io)[2])
# one line in collection, seven otherwise
get(io, :typeinfo, nothing) === nothing && (limit *= 7)
if get(io, :typeinfo, nothing) === nothing
limit *= 7
else
# strings in collections are typically indented one space
limit -= 1
end
end

# early out for short strings
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1 change: 1 addition & 0 deletions stdlib/REPL/src/REPL.jl
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Expand Up @@ -510,6 +510,7 @@ function display(d::REPLDisplay, mime::MIME"text/plain", x)
# this can override the :limit property set initially
io = foldl(IOContext, d.repl.options.iocontext, init=io)
end
io = IOContext(io, :displaysize => displaysize(outstream(d.repl)))
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What I don't get about this is that io is already initialized to outstream(d.repl), so this should not be necessary. Is something else adding a :displaysize key here that's overriding it?

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I think the actual problem is in arrayshow.jl:

            sx = sprint(show, "text/plain", x, context=io, sizehint=0)

in print_matrix_row. It tries to inherit the context but the displaysize is not included.

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Okay, will try that then.

show_repl(io, mime, x[])
println(io)
end
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2 changes: 1 addition & 1 deletion test/show.jl
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Expand Up @@ -897,7 +897,7 @@ end
@test r == repr("x"^271) * " ⋯ 459 bytes ⋯ " * repr("x"^270)
r = replstr(["x"^1000])
@test length(r) < 120
@test r == "1-element Vector{String}:\n " * repr("x"^31) * " ⋯ 939 bytes ⋯ " * repr("x"^30)
@test r == "1-element Vector{String}:\n " * repr("x"^30) * " ⋯ 940 bytes ⋯ " * repr("x"^30)
end
end

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