Adding mercuial prompt

config/git.lua

@@ -39,6 +39,7 @@ function git_prompt_filter()
         end
 
         clink.prompt.value = string.gsub(clink.prompt.value, "{git}", color.."("..branch..")")
+        clink.prompt.value = string.gsub(clink.prompt.value, "{hg}", "")
         return true
     end
 
@@ -47,4 +48,4 @@ function git_prompt_filter()
     return false
 end
 
-clink.prompt.register_filter(git_prompt_filter, 50)
+clink.prompt.register_filter(git_prompt_filter, 50)

config/hg.lua

@@ -0,0 +1,54 @@
+---
+ -- Find out current branch
+ -- @return {false|mercurial branch name}
+---
+function get_hg_branch()
+    for line in io.popen("hg branch 2>nul"):lines() do
+        local m = line:match("(.+)$")
+        if m then
+            return m
+        end
+    end
+
+    return false
+end
+
+---
+ -- Get the status of working dir
+ -- @return {bool}
+---
+function get_hg_status()
+    for line in io.popen("hg status"):lines() do
+        return false
+    end
+    return true
+end
+
+function hg_prompt_filter()
+
+    -- Colors for mercurial status
+    local colors = {
+        clean = "\x1b[1;37;40m",
+        dirty = "\x1b[31;1m",
+    }
+
+    local branch = get_hg_branch()
+    if branch then
+        -- Has branch => therefore it is a mercurial folder, now figure out status
+        if get_hg_status() then
+            color = colors.clean
+        else
+            color = colors.dirty
+        end
+
+        clink.prompt.value = string.gsub(clink.prompt.value, "{hg}", color.."("..branch..")")
+        clink.prompt.value = string.gsub(clink.prompt.value, "{git}", "")
+        return true
+    end
+
+    -- No mercurial present or not in mercurial file
+    clink.prompt.value = string.gsub(clink.prompt.value, "{hg}", "")
+    return false
+end
+
+clink.prompt.register_filter(hg_prompt_filter, 50)

vendor/init.bat

@@ -9,7 +9,7 @@
 
 :: Change the prompt style
 :: Mmm tasty lamb
-@prompt $E[1;32;40m$P$S{git}$S$_$E[1;30;40m{lamb}$S$E[0m
+@prompt $E[1;32;40m$P$S{git}{hg}$S$_$E[1;30;40m{lamb}$S$E[0m
 
 :: Pick right version of clink
 @if "%PROCESSOR_ARCHITECTURE%"=="x86" (