Fix startup when history file is bad

[IanButterworth]

Fixes #59406

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ERROR: Invalid history file (/tmp/broken_history.jl) format:
If you have a history file left over from an older version of Julia,
try renaming or deleting it.
Invalid character: '{' at line 1
Stacktrace:
 [1] error(::String, ::String, ::String, ::Int64)
   @ Base ./error.jl:54
 [2] hist_from_file(hp::REPL.REPLHistoryProvider, path::String)
   @ REPL ~/Documents/GitHub/julia/usr/share/julia/stdlib/v1.13/REPL/src/REPL.jl:910
 [3] setup_interface(repl::LineEditREPL, hascolor::Bool, extra_repl_keymap::Any)
   @ REPL ~/Documents/GitHub/julia/usr/share/julia/stdlib/v1.13/REPL/src/REPL.jl:1410
 [4] setup_interface
   @ ~/Documents/GitHub/julia/usr/share/julia/stdlib/v1.13/REPL/src/REPL.jl:1281 [inlined]
 [5] run_frontend(repl::LineEditREPL, backend::REPL.REPLBackendRef)
   @ REPL ~/Documents/GitHub/julia/usr/share/julia/stdlib/v1.13/REPL/src/REPL.jl:1695
 [6] (::REPL.var"#61#62"{LineEditREPL, REPL.REPLBackendRef})()
   @ REPL ~/Documents/GitHub/julia/usr/share/julia/stdlib/v1.13/REPL/src/REPL.jl:678

[ Info: Disabling history file for this session
julia> 

[DilumAluthge]

Could we add a test? I tried to write one, but I can't figure out how to run Julia in a subprocess in a way that reproduces the bug.

[DilumAluthge]

Just as an example of one thing I tried (super hacky, obviously, and almost certainly incorrect):

histfile, hist_io = mktemp()
write(hist_io, UInt8[0xd0, 0x45, 0xc7]) # invalid history file contents
close(hist_io)
julia = Base.julia_cmd()[1]
cmd = addenv(`$julia`, "JULIA_HISTORY" => histfile);
io = open(cmd; write = true, read = true);
println(io, "101 + 202")
sleep(2)
bytes = read(io, 1)
append!(bytes, read(io, bytesavailable(io)))
str = String(copy(bytes))
@info "" str

# This will print: 
# ┌ Info:
# └   str = "303\n"

But this code doesn't seem to error on Julia 1.11, so I'm not able to actually reproduce the bug with this method.

[giordano]

You need to start the REPL, no?

[DilumAluthge]

Ah. I had naively thought that just running julia (with no other arguments) would have started a Julia REPL?

What arguments do I need to add in my Cmd to start a REPL?

[DilumAluthge]

julia -i doesn't seem to change anything; same for julia -i -e 'using REPL'.

[IanButterworth]

Figured out the proper fix and added a test

[IanButterworth]

From the test failure I think the fix might not be working on Windows.. If someone can check on windows that would help. Otherwise I'll try to figure it out from the tests.

[DilumAluthge]

Thanks so much Ian.

Is this backportable to 1.11.x?

[DilumAluthge]

Ugh disregard my comment, I didn't see it already has the backport labels.