Rename cryptic symbols in symlink_forest.go .

		}

		// The full paths of children in the input trees and in the output tree

		fp := shared.JoinPath(forestDir, f)

		sp := shared.JoinPath(srcDir, f)

		bp := shared.JoinPath(buildFilesDir, f)

		forestChild := shared.JoinPath(forestDir, f)

		srcChild := shared.JoinPath(srcDir, f)

		buildFilesChild := shared.JoinPath(buildFilesDir, f)

		// Descend in the exclusion tree, if there are any excludes left

		var ce *node

		var excludeChild *node

		if exclude == nil {

			ce = nil

			excludeChild = nil

		} else {

			ce = exclude.children[f]

			excludeChild = exclude.children[f]

		}

		sf, sExists := srcDirMap[f]

		bf, bExists := buildFilesMap[f]

		excluded := ce != nil && ce.excluded

		srcChildEntry, sExists := srcDirMap[f]

		buildFilesChildEntry, bExists := buildFilesMap[f]

		excluded := excludeChild != nil && excludeChild.excluded

		if excluded {

			continue

		}

		if !sExists {

			if bf.IsDir() && ce != nil {

			if buildFilesChildEntry.IsDir() && excludeChild != nil {

				// Not in the source tree, but we have to exclude something from under

				// this subtree, so descend

				plantSymlinkForestRecursive(topdir, fp, bp, sp, ce, acc)

				plantSymlinkForestRecursive(topdir, forestChild, buildFilesChild, srcChild, excludeChild, acc)

			} else {

				// Not in the source tree, symlink BUILD file

				symlinkIntoForest(topdir, fp, bp)

				symlinkIntoForest(topdir, forestChild, buildFilesChild)

			}

		} else if !bExists {

			if sf.IsDir() && ce != nil {

			if srcChildEntry.IsDir() && excludeChild != nil {

				// Not in the build file tree, but we have to exclude something from

				// under this subtree, so descend

				plantSymlinkForestRecursive(topdir, fp, bp, sp, ce, acc)

				plantSymlinkForestRecursive(topdir, forestChild, buildFilesChild, srcChild, excludeChild, acc)

			} else {

				// Not in the build file tree, symlink source tree, carry on

				symlinkIntoForest(topdir, fp, sp)

				symlinkIntoForest(topdir, forestChild, srcChild)

			}

		} else if sf.IsDir() && bf.IsDir() {

		} else if srcChildEntry.IsDir() && buildFilesChildEntry.IsDir() {

			// Both are directories. Descend.

			plantSymlinkForestRecursive(topdir, fp, bp, sp, ce, acc)

			plantSymlinkForestRecursive(topdir, forestChild, buildFilesChild, srcChild, excludeChild, acc)

		} else {

			// Both exist and one is a file. This is an error.

			fmt.Fprintf(os.Stderr,

				"Conflict in workspace symlink tree creation: both '%s' and '%s' exist and at least one of them is a file\n",

				sp, bp)

				srcChild, buildFilesChild)

			os.Exit(1)

		}

	}