Cmder is an awsome package of software which replaces the default consolecmd.exe orpowershell on windows.

If you are in a git repo, you see the current branch in the prompt, colored in white if its clean or red if dirty. There are similar features for yarn, npm, ...

Sometimes you want to add the output of to the prompt too. This can be done like this:

In my case i wanted to see on whichterraform workspace i am. with terraform you can do this by runningterraform workspace show in your terraform directory. this would output something like

λ terraform workspace showdefault

To do this you have to create aclink extension. Assuming that you installed cmder inC:\Program Files\Cmder you create a file calledterraform.lua inC:\Program Files\Cmder\vendor\clink-completions

terraform.lua

localcolor=require("color")localfunctionis_terraform()fordirinio.popen([[dir ".\" /b /ad]]):lines()doifdir==".terraform"thenreturntrueendendreturnfalseendlocalfunctionterraform_prompt_filter()ifis_terraform()thenf=assert(io.popen("terraform workspace show"))forlineinf:lines()doterraform_context='(workspace: '..line..')'ifline=="production"thenprompt_color=color.REDelseifline=="development"thenprompt_color=color.GREENelseprompt_color=color.YELLOWendbreakend-- for loopf:close()terraform_context=color.color_text(terraform_context,prompt_color)clink.prompt.value=clink.prompt.value:gsub("\n",terraform_context.."\n")returnfalseendendclink.prompt.register_filter(terraform_prompt_filter,1)

this code checks if it is currently in a terraform directory by looking if the directory.terraform exists. it colors the workspace output in green if you are ondevelopment workspace, red if you are onproduction and yellow on all others. adapt the code for your needs.

i am sure that the lua code can be optimized, i am open for comments and enhancements.

links:

• cover image by Willi Heidelbachhttps://pixabay.com/en/puzzle-match-missing-hole-blank-693870/