Cannot get 'clear' command to run

[LAC-Tech]

Sanity check - this is a perfectly normal command to run, right?

cargo watch -c -x test --poll

This just appends each output to the end of the previous output, no screen clearing, on my machine. Am I misunderstanding what 'clear' does?

[passcod]

Sure, that looks fine. Can we have platform, terminal emulator info, and a verbose log please?

[LAC-Tech]

Sure thing.

Platform is WSL2 Alpine
$TERM is xterm-256color

The 'clear' command works, and I could swear I had the clear flag working with cargo watch at some point.

2020-11-20T21:49:36.887+00:00 - DEBUG - Load Git/VCS ignores: true
2020-11-20T21:49:36.887+00:00 - DEBUG - Load .ignore ignores: true
2020-11-20T21:49:36.887+00:00 - DEBUG - Default ignores: ["*/.DS_Store", "*.sw?", "*.sw?x", "#*#", ".#*", ".*.kate-swp", "*/.hg/**", "*/.git/**", "*/.svn/**", "*.db", "*.db-*", "*/*.db-journal/**", "*/target/**"]
2020-11-20T21:49:36.887+00:00 - DEBUG - All ignores: ["*/.DS_Store", "*.sw?", "*.sw?x", "#*#", ".#*", ".*.kate-swp", "*/.hg/**", "*/.git/**", "*/.svn/**", "*.db", "*.db-*", "*/*.db-journal/**", "*/target/**"]
2020-11-20T21:49:36.887+00:00 - DEBUG - File updates debounce: 0.5 seconds
2020-11-20T21:49:36.887+00:00 - DEBUG - Watches: ["."]
2020-11-20T21:49:36.887+00:00 - DEBUG - Commands: ["cargo check"]
2020-11-20T21:49:36.887+00:00 - DEBUG - Watchexec arguments: Args { cmd: ["cargo check"], paths: ["."], filters: [], ignores: ["*/.DS_Store", "*.sw?", "*.sw?x", "#*#", ".#*", ".*.kate-swp", "*/.hg/**", "*/.git/**", "*/.svn/**", "*.db", "*.db-*", "*/*.db-journal/**", "*/target/**"], clear_screen: true, signal: None, restart: true, debounce: 500, debug: false, run_initially: true, no_shell: false, no_meta: false, no_environment: true, no_vcs_ignore: false, no_ignore: false, once: false, poll: false, poll_interval: 500, watch_when_idle: false }
2020-11-20T21:49:36.912+00:00 - DEBUG - Looking in "/home/lewis/rust-cms" for a .git directory
2020-11-20T21:49:36.913+00:00 - DEBUG - glob converted to regex: Glob { glob: "target/**", re: "(?-u)^target(?:/?|/.*)$", opts: GlobOptions { case_insensitive: false, literal_separator: true, backslash_escape: true }, tokens: Tokens([Literal('t'), Literal('a'), Literal('r'), Literal('g'), Literal('e'), Literal('t'), RecursiveSuffix]) }
2020-11-20T21:49:36.913+00:00 - DEBUG - built glob set; 0 literals, 0 basenames, 0 extensions, 0 prefixes, 0 suffixes, 0 required extensions, 1 regexes
2020-11-20T21:49:36.913+00:00 - DEBUG - Loaded "/home/lewis/rust-cms/.gitignore"
2020-11-20T21:49:36.937+00:00 - DEBUG - Adding ignore: "*/.DS_Store/**"
2020-11-20T21:49:36.937+00:00 - DEBUG - Adding ignore: "*.sw?/**"
2020-11-20T21:49:36.937+00:00 - DEBUG - Adding ignore: "*.sw?x/**"
2020-11-20T21:49:36.937+00:00 - DEBUG - Adding ignore: "**/#*#/**"
2020-11-20T21:49:36.937+00:00 - DEBUG - Adding ignore: "**/.#*"
2020-11-20T21:49:36.937+00:00 - DEBUG - Adding ignore: "**/.*.kate-swp/**"
2020-11-20T21:49:36.937+00:00 - DEBUG - Adding ignore: "*/.hg/**"
2020-11-20T21:49:36.937+00:00 - DEBUG - Adding ignore: "*/.git/**"
2020-11-20T21:49:36.937+00:00 - DEBUG - Adding ignore: "*/.svn/**"
2020-11-20T21:49:36.937+00:00 - DEBUG - Adding ignore: "*.db/**"
2020-11-20T21:49:36.937+00:00 - DEBUG - Adding ignore: "*.db-*"
2020-11-20T21:49:36.937+00:00 - DEBUG - Adding ignore: "*/*.db-journal/**"
2020-11-20T21:49:36.937+00:00 - DEBUG - Adding ignore: "*/target/**"
2020-11-20T21:49:36.937+00:00 - DEBUG - glob converted to regex: Glob { glob: "*/.DS_Store/**", re: "(?-u)^.*/\\.DS_Store(?:/?|/.*)$", opts: GlobOptions { case_insensitive: false, literal_separator: false, backslash_escape: true }, tokens: Tokens([ZeroOrMore, Literal('/'), Literal('.'), Literal('D'), Literal('S'), Literal('_'), Literal('S'), Literal('t'), Literal('o'), Literal('r'), Literal('e'), RecursiveSuffix]) }
2020-11-20T21:49:36.937+00:00 - DEBUG - glob converted to regex: Glob { glob: "*.sw?/**", re: "(?-u)^.*\\.sw.(?:/?|/.*)$", opts: GlobOptions { case_insensitive: false, literal_separator: false, backslash_escape: true }, tokens: Tokens([ZeroOrMore, Literal('.'), Literal('s'), Literal('w'), Any, RecursiveSuffix]) }
2020-11-20T21:49:36.937+00:00 - DEBUG - glob converted to regex: Glob { glob: "*.sw?x/**", re: "(?-u)^.*\\.sw.x(?:/?|/.*)$", opts: GlobOptions { case_insensitive: false, literal_separator: false, backslash_escape: true }, tokens: Tokens([ZeroOrMore, Literal('.'), Literal('s'), Literal('w'), Any, Literal('x'), RecursiveSuffix]) }
2020-11-20T21:49:36.937+00:00 - DEBUG - glob converted to regex: Glob { glob: "**/#*#/**", re: "(?-u)^(?:/?|.*/)\\#.*\\#(?:/?|/.*)$", opts: GlobOptions { case_insensitive: false, literal_separator: false, backslash_escape: true }, tokens: Tokens([RecursivePrefix, Literal('#'), ZeroOrMore, Literal('#'), RecursiveSuffix]) }
2020-11-20T21:49:36.937+00:00 - DEBUG - glob converted to regex: Glob { glob: "**/.#*", re: "(?-u)^(?:/?|.*/)\\.\\#.*$", opts: GlobOptions { case_insensitive: false, literal_separator: false, backslash_escape: true }, tokens: Tokens([RecursivePrefix, Literal('.'), Literal('#'), ZeroOrMore]) }
2020-11-20T21:49:36.937+00:00 - DEBUG - glob converted to regex: Glob { glob: "**/.*.kate-swp/**", re: "(?-u)^(?:/?|.*/)\\..*\\.kate\\-swp(?:/?|/.*)$", opts: GlobOptions { case_insensitive: false, literal_separator: false, backslash_escape: true }, tokens: Tokens([RecursivePrefix, Literal('.'), ZeroOrMore, Literal('.'), Literal('k'), Literal('a'), Literal('t'), Literal('e'), Literal('-'), Literal('s'), Literal('w'), Literal('p'), RecursiveSuffix]) }
2020-11-20T21:49:36.937+00:00 - DEBUG - glob converted to regex: Glob { glob: "*/.hg/**", re: "(?-u)^.*/\\.hg(?:/?|/.*)$", opts: GlobOptions { case_insensitive: false, literal_separator: false, backslash_escape: true }, tokens: Tokens([ZeroOrMore, Literal('/'), Literal('.'), Literal('h'), Literal('g'), RecursiveSuffix]) }
2020-11-20T21:49:36.937+00:00 - DEBUG - glob converted to regex: Glob { glob: "*/.git/**", re: "(?-u)^.*/\\.git(?:/?|/.*)$", opts: GlobOptions { case_insensitive: false, literal_separator: false, backslash_escape: true }, tokens: Tokens([ZeroOrMore, Literal('/'), Literal('.'), Literal('g'), Literal('i'), Literal('t'), RecursiveSuffix]) }
2020-11-20T21:49:36.937+00:00 - DEBUG - glob converted to regex: Glob { glob: "*/.svn/**", re: "(?-u)^.*/\\.svn(?:/?|/.*)$", opts: GlobOptions { case_insensitive: false, literal_separator: false, backslash_escape: true }, tokens: Tokens([ZeroOrMore, Literal('/'), Literal('.'), Literal('s'), Literal('v'), Literal('n'), RecursiveSuffix]) }
2020-11-20T21:49:36.937+00:00 - DEBUG - glob converted to regex: Glob { glob: "*.db/**", re: "(?-u)^.*\\.db(?:/?|/.*)$", opts: GlobOptions { case_insensitive: false, literal_separator: false, backslash_escape: true }, tokens: Tokens([ZeroOrMore, Literal('.'), Literal('d'), Literal('b'), RecursiveSuffix]) }
2020-11-20T21:49:36.937+00:00 - DEBUG - glob converted to regex: Glob { glob: "*.db-*", re: "(?-u)^.*\\.db\\-.*$", opts: GlobOptions { case_insensitive: false, literal_separator: false, backslash_escape: true }, tokens: Tokens([ZeroOrMore, Literal('.'), Literal('d'), Literal('b'), Literal('-'), ZeroOrMore]) }
2020-11-20T21:49:36.937+00:00 - DEBUG - glob converted to regex: Glob { glob: "*/*.db-journal/**", re: "(?-u)^.*/.*\\.db\\-journal(?:/?|/.*)$", opts: GlobOptions { case_insensitive: false, literal_separator: false, backslash_escape: true }, tokens: Tokens([ZeroOrMore, Literal('/'), ZeroOrMore, Literal('.'), Literal('d'), Literal('b'), Literal('-'), Literal('j'), Literal('o'), Literal('u'), Literal('r'), Literal('n'), Literal('a'), Literal('l'), RecursiveSuffix]) }
2020-11-20T21:49:36.937+00:00 - DEBUG - glob converted to regex: Glob { glob: "*/target/**", re: "(?-u)^.*/target(?:/?|/.*)$", opts: GlobOptions { case_insensitive: false, literal_separator: false, backslash_escape: true }, tokens: Tokens([ZeroOrMore, Literal('/'), Literal('t'), Literal('a'), Literal('r'), Literal('g'), Literal('e'), Literal('t'), RecursiveSuffix]) }
2020-11-20T21:49:36.937+00:00 - DEBUG - built glob set; 0 literals, 0 basenames, 0 extensions, 0 prefixes, 0 suffixes, 0 required extensions, 13 regexes
2020-11-20T21:49:36.991+00:00 - DEBUG - Watching "/home/lewis/rust-cms"
[Running 'cargo check']
2020-11-20T21:49:36.996+00:00 - DEBUG - Received SIGCHLD
2020-11-20T21:49:36.996+00:00 - DEBUG - Launching child process
2020-11-20T21:49:36.996+00:00 - DEBUG - Assembled command "sh" "-c" "cargo check; echo [Finished running. Exit status: $?]"
2020-11-20T21:49:37.000+00:00 - DEBUG - Waiting for filesystem activity
    Finished dev [unoptimized + debuginfo] target(s) in 0.22s
2020-11-20T21:49:37.234+00:00 - DEBUG - Ignoring "/home/lewis/rust-cms/target/debug/.cargo-lock": matched ignore filter
[Finished running. Exit status: 0]
2020-11-20T21:49:37.238+00:00 - DEBUG - Received SIGCHLD
2020-11-20T21:49:37.748+00:00 - DEBUG - Paths updated: [PathOp { path: "/home/lewis/rust-cms/debug.txt", op: Some(WRITE), cookie: None }]
[Running 'cargo check']
2020-11-20T21:49:37.748+00:00 - DEBUG - Sending SIGTERM (int: 15) to child process
2020-11-20T21:49:37.748+00:00 - DEBUG - Waiting for process to exit...
2020-11-20T21:49:37.753+00:00 - DEBUG - Received SIGCHLD
2020-11-20T21:49:37.753+00:00 - DEBUG - Launching child process
2020-11-20T21:49:37.753+00:00 - DEBUG - Assembled command "sh" "-c" "cargo check; echo [Finished running. Exit status: $?]"
2020-11-20T21:49:37.757+00:00 - DEBUG - Waiting for filesystem activity
    Finished dev [unoptimized + debuginfo] target(s) in 0.20s
2020-11-20T21:49:37.974+00:00 - DEBUG - Ignoring "/home/lewis/rust-cms/target/debug/.cargo-lock": matched ignore filter
[Finished running. Exit status: 0]
2020-11-20T21:49:37.977+00:00 - DEBUG - Received SIGCHLD

[passcod]

Can you run "tput clear" ? That's what we use internally on unix to clear the screen.Also what actual program are you using as terminal, not just what it reports as $TERM, please.

[LAC-Tech]

tput clear works fine.

the terminal is the default WSL2 terminal
same issue in alacritty though

[passcod]

I was mistaken, what we actually run is tput reset. Nevertheless, that should work as well. I wonder if the build picked up the wrong platform when installing: "windows" builds run cmd /c "tput reset || cls" [source] which I think wouldn't work in a WSL environment.

[LAC-Tech]

Ok so I'm experimenting with other platforms. This is openbsd, running on a virtual machine, ssh'd with windows terminal. cargo watch was compiled on the openBSD virtual machine, so I imagine it picks up the right platform.

openbsd / windows terminal

Then I thought "well maybe it's windows terminal fault", so here's the raw output from virtualbox.

openbsd / virtualbox

So now I'm thinking maybe I'm confused - I expected "--clear" to just show one result of checking/running tests, not append multiple. Or do I have that wrong?

Anyway happy to try on a more 'normal' OS on virtualbox, if you have one you know that works.

[passcod]

Closing in favour of upstream issue: watchexec/watchexec#185.