File elvish-multi-dots.patch of Package elvish

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File elvish-multi-dots.patch of Package elvish

Index: elvish-0.18.0/pkg/eval/eval.go
===================================================================
--- elvish-0.18.0.orig/pkg/eval/eval.go
+++ elvish-0.18.0/pkg/eval/eval.go
@@ -298,6 +298,29 @@ func (ev *Evaler) AddBeforeExit(f func()
 	ev.BeforeExit = append(ev.BeforeExit, f)
 }
 
+// expandMultiDots expands three or more dots in path to double dots
+// since golang supports double dots in path only
+func expandMultiDots(path string) string {
+  r := []rune(path)
+  for i := len(r)-1; i >= 2; i-- {
+    if r[i] == '.' && r[i-1] == '.' && r[i-2] == '.' {
+      var left bool
+      var leftover []rune 
+      if len(r[i+1:]) > 0 {
+        left = true
+        leftover = make([]rune, len(r[i+1:]))
+        copy(leftover, r[i+1:])
+      } 
+      r = append(r[:i], os.PathSeparator, '.', '.')
+      if left {
+        r = append(r, leftover...)
+      }
+    }
+  }
+  
+  return string(r)
+}
+
 // Chdir changes the current directory, and updates $E:PWD on success
 //
 // It runs the functions in beforeChdir immediately before changing the
@@ -308,7 +331,7 @@ func (ev *Evaler) Chdir(path string) err
 		hook(path)
 	}
 
-	err := os.Chdir(path)
+	err := os.Chdir(expandMultiDots(path))
 	if err != nil {
 		return err
 	}

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File elvish-multi-dots.patch of Package elvish

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