remove workaround for controlling terminal behavior in repl_cmd#58554
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remove workaround for controlling terminal behavior in repl_cmd#58554
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This was originally added as a workaround for the behavior of sh to try to become the terminal process group leader, but no longer relevant since #25006 removed that flag again: ``` julia> run(detach(`bash -i -c "sleep 0"`)) bash: cannot set terminal process group (-1): Inappropriate ioctl for device bash: no job control in this shell Process(`bash -i -c 'sleep 0'`, ProcessExited(0)) ``` Julia recieves SIGTTOU when a process like "sh -i -c" exits (at least for bash and zsh, but not dash, ksh, or csh), since "sh -i" sometimes takes over the controlling terminal, causing julia to stop once the bash process exits. This can be quite annoying, but julia goes through some pains (in libuv) to ensure it doesn't steal the controlling terminal from the parent, and apparently bash is not so careful about it. However, since PR #25006, julia hasn't needed this workaround for this issue, so we can now follow the intended behavior when the child is in the same session group and steals the controlling terminal from the parent. Even if such behavior seems odd, this seems to be the intended behavior per posix design implementation that it gets SIGTTOU when julia later tries to change mode (from cooked -> raw after printing the prompt): http://curiousthing.org/sigttin-sigttou-deep-dive-linux. ``` $ ./julia -q shell> bash -i -c "sleep 1" [1]+ Stopped ./julia julia> run(`zsh -i -c "sleep 0"`) Process(`zsh -i -c 'sleep 0'`, ProcessExited(0)) julia> [1]+ Stopped ./julia ```
vtjnash
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REPL
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For background on why this is a useful signal and behavior and should not be just blocked, see nodejs/node#35536 |
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According to glibc, there's a half page of code for how to correctly implement a REPL mode change call: https://www.gnu.org/software/libc/manual/html_node/Initializing-the-Shell.html |
KristofferC
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Jun 2, 2025
This was originally added as a workaround for the behavior of sh to try to become the terminal process group leader, but no longer relevant since #25006 removed that flag again: ``` julia> run(detach(`bash -i -c "sleep 0"`)) bash: cannot set terminal process group (-1): Inappropriate ioctl for device bash: no job control in this shell Process(`bash -i -c 'sleep 0'`, ProcessExited(0)) ``` Long explanation: Julia recieves SIGTTOU when a process like "sh -i -c" exits (at least for bash and zsh, but not dash, ksh, or csh), since "sh -i" sometimes takes over the controlling terminal, causing julia to stop once the bash process exits. This can be quite annoying, but julia goes through some pains (in libuv) to ensure it doesn't steal the controlling terminal from the parent, and apparently bash is not so careful about it. However, since PR #25006, julia hasn't needed this workaround for this issue, so we can now follow the intended behavior when the child is in the same session group and steals the controlling terminal from the parent. Even if such behavior seems odd, this seems to be the intended behavior per posix design implementation that it gets SIGTTOU when julia later tries to change mode (from cooked -> raw after printing the prompt): http://curiousthing.org/sigttin-sigttou-deep-dive-linux. For some background on why this is a useful signal and behavior and should not be just blocked, see nodejs/node#35536. According to glibc, there's a half page of code for how to correctly implement a REPL mode change call: https://www.gnu.org/software/libc/manual/html_node/Initializing-the-Shell.html ``` $ ./julia -q shell> bash -i -c "sleep 1" [1]+ Stopped ./julia julia> run(`zsh -i -c "sleep 0"`) Process(`zsh -i -c 'sleep 0'`, ProcessExited(0)) julia> [1]+ Stopped ./julia ``` (cherry picked from commit 0cbe466)
vtjnash
added
backport 1.12
DilumAluthge
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Sep 9, 2025
This was originally added as a workaround for the behavior of sh to try to become the terminal process group leader, but no longer relevant since #25006 removed that flag again: ``` julia> run(detach(`bash -i -c "sleep 0"`)) bash: cannot set terminal process group (-1): Inappropriate ioctl for device bash: no job control in this shell Process(`bash -i -c 'sleep 0'`, ProcessExited(0)) ``` Long explanation: Julia recieves SIGTTOU when a process like "sh -i -c" exits (at least for bash and zsh, but not dash, ksh, or csh), since "sh -i" sometimes takes over the controlling terminal, causing julia to stop once the bash process exits. This can be quite annoying, but julia goes through some pains (in libuv) to ensure it doesn't steal the controlling terminal from the parent, and apparently bash is not so careful about it. However, since PR #25006, julia hasn't needed this workaround for this issue, so we can now follow the intended behavior when the child is in the same session group and steals the controlling terminal from the parent. Even if such behavior seems odd, this seems to be the intended behavior per posix design implementation that it gets SIGTTOU when julia later tries to change mode (from cooked -> raw after printing the prompt): http://curiousthing.org/sigttin-sigttou-deep-dive-linux. For some background on why this is a useful signal and behavior and should not be just blocked, see nodejs/node#35536. According to glibc, there's a half page of code for how to correctly implement a REPL mode change call: https://www.gnu.org/software/libc/manual/html_node/Initializing-the-Shell.html ``` $ ./julia -q shell> bash -i -c "sleep 1" [1]+ Stopped ./julia julia> run(`zsh -i -c "sleep 0"`) Process(`zsh -i -c 'sleep 0'`, ProcessExited(0)) julia> [1]+ Stopped ./julia ``` (cherry picked from commit 0cbe466)
59 tasks
DilumAluthge
added
backport 1.11
DilumAluthge
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that referenced
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Sep 13, 2025
This was originally added as a workaround for the behavior of sh to try to become the terminal process group leader, but no longer relevant since #25006 removed that flag again: ``` julia> run(detach(`bash -i -c "sleep 0"`)) bash: cannot set terminal process group (-1): Inappropriate ioctl for device bash: no job control in this shell Process(`bash -i -c 'sleep 0'`, ProcessExited(0)) ``` Long explanation: Julia recieves SIGTTOU when a process like "sh -i -c" exits (at least for bash and zsh, but not dash, ksh, or csh), since "sh -i" sometimes takes over the controlling terminal, causing julia to stop once the bash process exits. This can be quite annoying, but julia goes through some pains (in libuv) to ensure it doesn't steal the controlling terminal from the parent, and apparently bash is not so careful about it. However, since PR #25006, julia hasn't needed this workaround for this issue, so we can now follow the intended behavior when the child is in the same session group and steals the controlling terminal from the parent. Even if such behavior seems odd, this seems to be the intended behavior per posix design implementation that it gets SIGTTOU when julia later tries to change mode (from cooked -> raw after printing the prompt): http://curiousthing.org/sigttin-sigttou-deep-dive-linux. For some background on why this is a useful signal and behavior and should not be just blocked, see nodejs/node#35536. According to glibc, there's a half page of code for how to correctly implement a REPL mode change call: https://www.gnu.org/software/libc/manual/html_node/Initializing-the-Shell.html ``` $ ./julia -q shell> bash -i -c "sleep 1" [1]+ Stopped ./julia julia> run(`zsh -i -c "sleep 0"`) Process(`zsh -i -c 'sleep 0'`, ProcessExited(0)) julia> [1]+ Stopped ./julia ``` (cherry picked from commit 0cbe466)
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This was referenced Sep 15, 2025
24 tasks
KristofferC
removed
the
backport 1.12
DilumAluthge
added a commit
that referenced
this pull request
Nov 3, 2025
Backported PRs: - [x] #57523 <!-- Remove usages of weak symbols --> - [x] #58127 <!-- [DOC] Update installation docs: /downloads/ => /install/ --> - [x] #58202 <!-- [release-1.11] malloc: use jl_get_current_task to fix null check --> - [x] #58554 <!-- remove workaround for controlling terminal behavior in repl_cmd --> - [x] #58584 <!-- Make `Ptr` values static-show w/ type-information --> - [x] #59062 <!-- remove a testset from MMAP that might cause CI to now fail on Windows --> - [x] #59300 <!-- Update the developer docs to reflect the use of JuliaSyntax.jl --> - [x] #57604 <!-- `@nospecialize` for `string_index_err` --> - [x] #59329 <!-- aotcompile: destroy LLVM context after serializing combined module --> - [x] #59418 <!-- Fix startup when history file is bad --> - [x] #56890 <!-- Enable getting non-boxed LLVM type from Julia Type --> - [x] #59559 <!-- codegen: mark write barrier field load as volatile --> - [x] #59572 <!-- Only apply Base.Sort.SubArrayOptimization when iszero(v.offset1) --> Need manual backport: - [ ] #56329 <!-- loading: clean up more concurrency issues --> - [ ] #56956 <!-- Add "mea culpa" to foreign module assignment error. --> - [ ] #57035 <!-- linux: workaround to avoid deadlock inside dl_iterate_phdr in glibc --> - [ ] #57089 <!-- Block thread from receiving profile signal with stackwalk lock --> - [ ] #57249 <!-- restore non-freebsd-unix fix for profiling --> - [ ] #58011 <!-- Remove try-finally scope from `@time_imports` `@trace_compile` `@trace_dispatch` --> - [ ] #58062 <!-- remove unnecessary edge from `exp_impl` to `pow` --> - [ ] #58157 <!-- add showing a string to REPL precompile workload --> - [ ] #58209 <!-- Specialize `one` for the `SizedArray` test helper --> - [ ] #58356 <!-- codegen: remove readonly from abstract type calling convention --> - [ ] #58415 <!-- [REPL] more reliable extension loading --> - [ ] #58510 <!-- Don't filter `Core` methods from newly-inferred list --> - [ ] #58110 <!-- relax dispatch for the `IteratorSize` method for `Generator` --> - [ ] #58965 <!-- Fix `hygienic-scope`s in inner macro expansions --> - [ ] #58971 <!-- Fix alignment of failed precompile jobs on CI --> - [ ] #59066 <!-- build: Also pass -fno-strict-aliasing for C++ --> - [ ] #59428 <!-- Correctly set the variant bits of uuid1 --> Contains multiple commits, manual intervention needed: - [ ] #55877 <!-- fix FileWatching designs and add workaround for a stat bug on Apple --> - [ ] #56755 <!-- docs: fix scope type of a `struct` to hard --> - [ ] #57809 <!-- Fix fptrunc Float64 -> Float16 rounding through Float32 --> - [ ] #57398 <!-- Make remaining float intrinsics require float arguments --> - [ ] #56351 <!-- Fix `--project=@script` when outside script directory --> - [ ] #57129 <!-- clarify that time_ns is monotonic --> - [ ] #58134 <!-- Note annotated string API is experimental in Julia 1.11 in HISTORY.md --> - [ ] #58401 <!-- check that hashing of types does not foreigncall (`jl_type_hash` is concrete evaluated) --> - [ ] #58435 <!-- Fix layout flags for types that have oddly sized primitive type fields --> - [ ] #58483 <!-- Fix tbaa usage when storing into heap allocated immutable structs --> - [ ] #58512 <!-- Make more types jl_static_show readably --> - [ ] #58012 <!-- Re-enable tab completion of kwargs for large method tables --> - [ ] #58683 <!-- Add 0 predecessor to entry basic block and handle it in inlining --> - [ ] #59112 <!-- Add builtin function name to add methods error --> - [ ] #56823 <!-- Make version of opaque closure constructor in world --> - [ ] #59467 <!-- `CoreLogging`: prevent some `Annotated*`-related instability --> Non-merged PRs with backport label: - [ ] #59450 <!-- Propagate Addrspaces: fix lift of memset --> - [ ] #58848 <!-- Set array size only when safe to do so --> - [ ] #55958 <!-- also redirect JL_STDERR etc. when redirecting to devnull --> - [ ] #55956 <!-- Make threadcall gc safe --> - [ ] #55534 <!-- Set stdlib sources as read-only during installation --> - [ ] #55499 <!-- propagate the terminal's `displaysize` to the `IOContext` used by the REPL --> - [ ] #55458 <!-- Allow for generically extracting unannotated string --> - [ ] #55457 <!-- Make AnnotateChar equality consider annotations --> - [ ] #55220 <!-- `isfile_casesensitive` fixes on Windows --> - [ ] #53957 <!-- tweak how filtering is done for what packages should be precompiled --> - [ ] #51479 <!-- prevent code loading from lookin in the versioned environment when building Julia --> - [ ] #50813 <!-- More doctests for Sockets and capitalization fix --> - [ ] #50157 <!-- improve docs for `@inbounds` and `Base.@propagate_inbounds` --> --------- Co-authored-by: Dilum Aluthge <dilum@aluthge.com> Co-authored-by: Sam Schweigel <sam.schweigel@juliahub.com> Co-authored-by: Cody Tapscott <84105208+topolarity@users.noreply.github.com> Co-authored-by: Jameson Nash <vtjnash@gmail.com> Co-authored-by: Adam Wheeler <adamwhlr@gmail.com> Co-authored-by: Neven Sajko <4944410+nsajko@users.noreply.github.com> Co-authored-by: Shuhei Kadowaki <40514306+aviatesk@users.noreply.github.com> Co-authored-by: Ian Butterworth <i.r.butterworth@gmail.com> Co-authored-by: William Moses <gh@wsmoses.com> Co-authored-by: Valentin Churavy <v.churavy@gmail.com> Co-authored-by: Lilith Orion Hafner <lilithhafner@gmail.com>
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KristofferC
removed
the
backport 1.10
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This was originally added as a workaround for the behavior of sh to try to become the terminal process group leader, but no longer relevant since #25006 removed that flag again:
Julia recieves SIGTTOU when a process like "sh -i -c" exits (at least for bash and zsh, but not dash, ksh, or csh), since "sh -i" sometimes takes over the controlling terminal, causing julia to stop once the bash process exits. This can be quite annoying, but julia goes through some pains (in libuv) to ensure it doesn't steal the controlling terminal from the parent, and apparently bash is not so careful about it. However, since PR #25006, julia hasn't needed this workaround for this issue, so we can now follow the intended behavior when the child is in the same session group and steals the controlling terminal from the parent. Even if such behavior seems odd, this seems to be the intended behavior per posix design implementation that it gets SIGTTOU when julia later tries to change mode (from cooked -> raw after printing the prompt): http://curiousthing.org/sigttin-sigttou-deep-dive-linux.