powerline-go: fix PROMPT_COMMAND duplicate in bash initialization

poe84it · poe84it · commit 35e9d200a1bc · 2025-08-21T08:03:22.000+02:00
diff --git a/modules/programs/powerline-go.nix b/modules/programs/powerline-go.nix
@@ -165,7 +165,9 @@ in
       }
 
       if [ "$TERM" != "linux" ]; then
-        PROMPT_COMMAND="_update_ps1;$PROMPT_COMMAND"
+        if [[ ";''${PROMPT_COMMAND:-};" != *";_update_ps1;"* ]]; then
+          PROMPT_COMMAND="_update_ps1''${PROMPT_COMMAND:+;$PROMPT_COMMAND}"
+        fi
       fi
     '';
 
diff --git a/tests/modules/programs/powerline-go/bash.nix b/tests/modules/programs/powerline-go/bash.nix
@@ -26,5 +26,8 @@
     assertFileContains \
       home-files/.bashrc \
       '/bin/powerline-go -error $old_exit_status -shell bash -modules nix-shell -newline -path-aliases \~/project/foo=prj-foo -ignore-repos /home/me/project1,/home/me/project2'
+    assertFileContains \
+      home-files/.bashrc \
+      'if [[ ";''${PROMPT_COMMAND:-};" != *";_update_ps1;"* ]]; then'
   '';
 }

Original file line number	Diff line number	Diff line change
`@@ -165,7 +165,9 @@ in`
`165`	`165`	`}`
`166`	`166`
`167`	`167`	`if [ "$TERM" != "linux" ]; then`
`168`		`- PROMPT_COMMAND="_update_ps1;$PROMPT_COMMAND"`
	`168`	`+ if [[ ";''${PROMPT_COMMAND:-};" != ";_update_ps1;" ]]; then`
	`169`	`+ PROMPT_COMMAND="_update_ps1''${PROMPT_COMMAND:+;$PROMPT_COMMAND}"`
	`170`	`+ fi`
`169`	`171`	`fi`
`170`	`172`	`'';`
`171`	`173`
Original file line number	Diff line number	Diff line change
`@@ -26,5 +26,8 @@`
`26`	`26`	`assertFileContains \`
`27`	`27`	`home-files/.bashrc \`
`28`	`28`	`'/bin/powerline-go -error $old_exit_status -shell bash -modules nix-shell -newline -path-aliases \~/project/foo=prj-foo -ignore-repos /home/me/project1,/home/me/project2'`
	`29`	`+ assertFileContains \`
	`30`	`+ home-files/.bashrc \`
	`31`	`+ 'if [[ ";''${PROMPT_COMMAND:-};" != ";_update_ps1;" ]]; then'`
`29`	`32`	`'';`
`30`	`33`	`}`