Improved the priority subsystem, and added a flag to only use a certain

percentage of the width of the window.

README.md

@@ -142,6 +142,9 @@ Usage of powerline-go:
         Use East Asian Ambiguous Widths
   -error int
         Exit code of previously executed command
+  -max-width int
+        Maximum width of the shell that the prompt may use, in percent.
+        (default 50)
   -mode string
         The characters used to make separators between segments.
         (valid choices: patched, compatible, flat)
@@ -152,6 +155,10 @@ Usage of powerline-go:
         (default "venv,user,host,ssh,cwd,perms,git,hg,jobs,exit,root")
   -newline
         Show the prompt on a new line
+  -priority string
+        Segments sorted by priority, if not enough space exists, the least priorized segments are removed first. Separate with ','
+        (valid choices: cwd, docker, exit, git-branch, git-status, hg, host, jobs, perms, root, ssh, time, user, venv)
+        (default "root,cwd,user,host,ssh,perms,git-branch,git-status,hg,jobs,exit")
   -shell string
         Set this to your shell type
         (valid choices: bare, bash, zsh)

main.go

@@ -17,18 +17,19 @@ type segment struct {
 }
 
 type args struct {
-	CwdMode          *string
-	CwdMaxDepth      *int
-	CwdMaxDirSize    *int
-	ColorizeHostname *bool
-	EastAsianWidth   *bool
-	PromptOnNewLine  *bool
-	Mode             *string
-	Theme            *string
-	Shell            *string
-	Modules          *string
-	Priority         *string
-	PrevError        *int
+	CwdMode            *string
+	CwdMaxDepth        *int
+	CwdMaxDirSize      *int
+	ColorizeHostname   *bool
+	EastAsianWidth     *bool
+	PromptOnNewLine    *bool
+	Mode               *string
+	Theme              *string
+	Shell              *string
+	Modules            *string
+	Priority           *string
+	MaxWidthPercentage *int
+	PrevError          *int
 }
 
 func warn(msg string) {
@@ -119,6 +120,10 @@ func main() {
 			"Segments sorted by priority, if not enough space exists, the least priorized segments are removed first. Separate with ','\n"+
 				"    	(valid choices: cwd, docker, exit, git-branch, git-status, hg, host, jobs, perms, root, ssh, time, user, venv)\n"+
 				"       "),
+		MaxWidthPercentage: flag.Int("max-width",
+			50,
+			"Maximum width of the shell that the prompt may use, in percent.\n"+
+				"       "),
 		PrevError: flag.Int("error", 0,
 			"Exit code of previously executed command"),
 	}

powerline.go

@@ -74,6 +74,8 @@ func (p *powerline) draw() string {
 	shellMaxLength64, _ := strconv.ParseInt(shellMaxLengthStr, 0, 64)
 	shellMaxLength := int(shellMaxLength64)
 
+	shellMaxLength = shellMaxLength * *p.args.MaxWidthPercentage / 100
+
 	shellActualLength := 0
 	if shellMaxLength > 0 {
 		for _, segment := range p.Segments {