diff --git a/shroom/can.go b/shroom/can.go
index 316112d..59d3291 100644
--- a/shroom/can.go
+++ b/shroom/can.go
@@ -45,32 +45,6 @@ func canFactory(
 
 // CanDelete and etc are hyphae operation checkers based on user rights and hyphae existence.
 var (
-	CanDelete = canFactory(
-		rejectDeleteLog,
-		"delete-confirm",
-		nil,
-		"ui.act_norights_delete",
-		"ui.act_notexist_delete",
-		true,
-	)
-
-	CanUnattach = canFactory(
-		rejectUnattachLog,
-		"unattach-confirm",
-		func(h hyphae.Hypha, u *user.User, lc *l18n.Localizer) (errmsg, errtitle string) {
-			switch h := h.(type) {
-			case *hyphae.EmptyHypha, *hyphae.TextualHypha:
-				rejectUnattachLog(h, u, "no amnt")
-				return lc.Get("ui.act_noattachment_tip"), lc.Get("ui.act_noattachment")
-			}
-
-			return "", ""
-		},
-		"ui.act_norights_unattach",
-		"ui.act_notexist_unattach",
-		true,
-	)
-
 	CanEdit = canFactory(
 		rejectEditLog,
 		"upload-text",
diff --git a/shroom/delete.go b/shroom/delete.go
index 6e1224a..1227dcb 100644
--- a/shroom/delete.go
+++ b/shroom/delete.go
@@ -6,34 +6,27 @@ import (
 
 	"github.com/bouncepaw/mycorrhiza/history"
 	"github.com/bouncepaw/mycorrhiza/hyphae"
-	"github.com/bouncepaw/mycorrhiza/l18n"
 	"github.com/bouncepaw/mycorrhiza/user"
 )
 
-// DeleteHypha deletes hypha and makes a history record about that.
-func DeleteHypha(u *user.User, h hyphae.Hypha, lc *l18n.Localizer) error {
-	if err := CanDelete(u, h, lc); err != nil {
-		return err
-	}
-
+// Delete deletes the hypha and makes a history record about that.
+func Delete(u *user.User, h hyphae.ExistingHypha) error {
 	hop := history.
 		Operation(history.TypeDeleteHypha).
 		WithMsg(fmt.Sprintf("Delete ‘%s’", h.CanonicalName())).
 		WithUser(u)
 
+	originalText, _ := FetchTextFile(h)
 	switch h := h.(type) {
 	case *hyphae.MediaHypha:
 		hop.WithFilesRemoved(h.MediaFilePath(), h.TextFilePath())
 	case *hyphae.TextualHypha:
 		hop.WithFilesRemoved(h.TextFilePath())
-	default:
-		panic("impossible")
 	}
-	originalText, _ := FetchTextFile(h)
-	hop.Apply()
-	if !hop.HasErrors() {
-		backlinks.UpdateBacklinksAfterDelete(h, originalText)
-		hyphae.DeleteHypha(h.(hyphae.ExistingHypha)) // we panicked before, so it's safe
+	if hop.Apply().HasErrors() {
+		return hop.Errs[0]
 	}
+	backlinks.UpdateBacklinksAfterDelete(h, originalText)
+	hyphae.DeleteHypha(h)
 	return nil
 }
diff --git a/shroom/rename.go b/shroom/rename.go
index 503f497..b232b63 100644
--- a/shroom/rename.go
+++ b/shroom/rename.go
@@ -12,7 +12,7 @@ import (
 	"github.com/bouncepaw/mycorrhiza/util"
 )
 
-// Rename renames the old hypha to the new name. Call if and only if the user has the permission to rename.
+// Rename renames the old hypha to the new name and makes a history record about that. Call if and only if the user has the permission to rename.
 func Rename(oldHypha hyphae.ExistingHypha, newName string, recursive bool, u *user.User) error {
 	if newName == "" {
 		rejectRenameLog(oldHypha, u, "no new name given")
diff --git a/shroom/init.go b/shroom/shroom.go
similarity index 84%
rename from shroom/init.go
rename to shroom/shroom.go
index 172f8cc..f422116 100644
--- a/shroom/init.go
+++ b/shroom/shroom.go
@@ -1,3 +1,6 @@
+// Package shroom provides utilities for hypha manipulation.
+//
+// Some of them are wrappers around functions provided by package hyphae. They manage history for you.
 package shroom
 
 import (
diff --git a/shroom/unattach.go b/shroom/unattach.go
index ec2ff1c..ca702d9 100644
--- a/shroom/unattach.go
+++ b/shroom/unattach.go
@@ -5,12 +5,11 @@ import (
 
 	"github.com/bouncepaw/mycorrhiza/history"
 	"github.com/bouncepaw/mycorrhiza/hyphae"
-	"github.com/bouncepaw/mycorrhiza/l18n"
 	"github.com/bouncepaw/mycorrhiza/user"
 )
 
-// RemoveMedia unattaches hypha and makes a history record about that.
-func RemoveMedia(u *user.User, h *hyphae.MediaHypha, lc *l18n.Localizer) error {
+// RemoveMedia removes media from the media hypha and makes a history record about that. If it only had media, the hypha will be deleted. If it also had text, the hypha will become textual.
+func RemoveMedia(u *user.User, h *hyphae.MediaHypha) error {
 	hop := history.
 		Operation(history.TypeUnattachHypha).
 		WithFilesRemoved(h.MediaFilePath()).
diff --git a/shroom/upload.go b/shroom/upload.go
index 21b5182..97f0e7e 100644
--- a/shroom/upload.go
+++ b/shroom/upload.go
@@ -8,7 +8,6 @@ import (
 	"github.com/bouncepaw/mycorrhiza/history"
 	"github.com/bouncepaw/mycorrhiza/hyphae"
 	"github.com/bouncepaw/mycorrhiza/hyphae/backlinks"
-	"github.com/bouncepaw/mycorrhiza/l18n"
 	"github.com/bouncepaw/mycorrhiza/mimetype"
 	"github.com/bouncepaw/mycorrhiza/user"
 	"io"
@@ -47,7 +46,7 @@ func writeTextToDisk(h hyphae.ExistingHypha, data []byte, hop *history.Op) error
 }
 
 // UploadText edits the hypha's text part and makes a history record about that.
-func UploadText(h hyphae.Hypha, data []byte, userMessage string, u *user.User, lc *l18n.Localizer) error {
+func UploadText(h hyphae.Hypha, data []byte, userMessage string, u *user.User) error {
 	hop := history.
 		Operation(history.TypeEditText).
 		WithMsg(historyMessageForTextUpload(h, userMessage)).
@@ -164,7 +163,7 @@ func writeMediaToDisk(h hyphae.Hypha, mime string, data []byte) (string, error)
 }
 
 // UploadBinary edits the hypha's media part and makes a history record about that.
-func UploadBinary(h hyphae.Hypha, mime string, file multipart.File, u *user.User, lc *l18n.Localizer) error {
+func UploadBinary(h hyphae.Hypha, mime string, file multipart.File, u *user.User) error {
 
 	// Privilege check
 	if !u.CanProceed("upload-binary") {
diff --git a/web/mutators.go b/web/mutators.go
index d963f02..a0be35e 100644
--- a/web/mutators.go
+++ b/web/mutators.go
@@ -55,7 +55,7 @@ func handlerRemoveMedia(w http.ResponseWriter, rq *http.Request) {
 		httpErr(w, lc, http.StatusForbidden, h.CanonicalName(), "no media to remove")
 		return
 	case *hyphae.MediaHypha:
-		if err := shroom.RemoveMedia(u, h, lc); err != nil {
+		if err := shroom.RemoveMedia(u, h); err != nil {
 			httpErr(w, lc, http.StatusInternalServerError, h.CanonicalName(), err.Error())
 			return
 		}
@@ -70,20 +70,20 @@ func handlerDelete(w http.ResponseWriter, rq *http.Request) {
 		h  = hyphae.ByName(util.HyphaNameFromRq(rq, "delete"))
 	)
 
-	switch h.(type) {
-	case *hyphae.EmptyHypha:
-		log.Printf("%s tries to delete empty hypha ‘%s’", u.Name, h.CanonicalName())
-		// TODO: localize
-		httpErr(w, lc, http.StatusForbidden, h.CanonicalName(), "Cannot delete an empty hypha")
-		return
-	}
-
 	if !u.CanProceed("delete") {
 		log.Printf("%s has no rights to delete ‘%s’\n", u.Name, h.CanonicalName())
 		httpErr(w, lc, http.StatusForbidden, h.CanonicalName(), "No rights")
 		return
 	}
 
+	switch h.(type) {
+	case *hyphae.EmptyHypha:
+		log.Printf("%s tries to delete empty hypha ‘%s’\n", u.Name, h.CanonicalName())
+		// TODO: localize
+		httpErr(w, lc, http.StatusForbidden, h.CanonicalName(), "Cannot delete an empty hypha")
+		return
+	}
+
 	if rq.Method == "GET" {
 		util.HTTP200Page(
 			w,
@@ -95,9 +95,10 @@ func handlerDelete(w http.ResponseWriter, rq *http.Request) {
 		return
 	}
 
-	if err := shroom.DeleteHypha(u, h, lc); err != nil {
+	if err := shroom.Delete(u, h.(hyphae.ExistingHypha)); err != nil {
 		log.Println(err)
 		httpErr(w, lc, http.StatusInternalServerError, h.CanonicalName(), err.Error())
+		return
 	}
 	http.Redirect(w, rq, "/hypha/"+h.CanonicalName(), http.StatusSeeOther)
 }
@@ -200,7 +201,7 @@ func handlerUploadText(w http.ResponseWriter, rq *http.Request) {
 	)
 
 	if action != "Preview" {
-		if err := shroom.UploadText(h, []byte(textData), message, u, lc); err != nil {
+		if err := shroom.UploadText(h, []byte(textData), message, u); err != nil {
 			httpErr(w, lc, http.StatusForbidden, hyphaName, err.Error())
 			return
 		}
@@ -261,7 +262,7 @@ func handlerUploadBinary(w http.ResponseWriter, rq *http.Request) {
 		mime = handler.Header.Get("Content-Type")
 	)
 
-	if err := shroom.UploadBinary(h, mime, file, u, lc); err != nil {
+	if err := shroom.UploadBinary(h, mime, file, u); err != nil {
 		httpErr(w, lc, http.StatusInternalServerError, hyphaName, err.Error())
 		return
 	}