Fix display causing REPL to hang on Linux

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## Unreleased
 - `LogTicks` now work well with `pseudolog10` [#5135](https://github.com/MakieOrg/Makie.jl/pull/5135)
+- Fix `display(figurelike)` causing the REPL to hang when using CairoMakie on a Linux system [#5281](https://github.com/MakieOrg/Makie.jl/pull/5281)
 
 ## [0.24.6] - 2025-08-19
 

CairoMakie/src/display.jl

@@ -7,11 +7,26 @@
 Try to run a command. Return `true` if `cmd` runs and is successful (exits with a code of `0`).
 Return `false` otherwise.
 """
-function tryrun(cmd::Cmd)
-    try
-        return success(cmd)
-    catch e
-        return false
+function tryrun(cmd::Cmd; wait = true)
+    if wait
+        try
+            return success(cmd)
+        catch e
+            return false
+        end
+    else
+        proc = try
+            run(cmd; wait = false)
+        catch e
+            return false
+        end
+        sleep(1e-3)
+        if proc.exitcode == typemin(Int) || proc.exitcode == 0
+            # still running || ran successfully
+            return true
+        else
+            return false
+        end
     end
 end
 
@@ -21,8 +36,8 @@ function openurl(url::String)
     elseif Sys.iswindows()
         tryrun(`powershell.exe start $url`) && return
     elseif Sys.isunix()
-        tryrun(`xdg-open $url`) && return
-        tryrun(`gnome-open $url`) && return
+        tryrun(`xdg-open $url`; wait = false) && return
+        tryrun(`gnome-open $url`; wait = false) && return
     end
     tryrun(`python -mwebbrowser $(url)`) && return
     # our last hope