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	Ensure that blob-excerpt links work for wiki (#18587)
It appears that the blob-excerpt links do not work on the wiki - likely since their introduction. This PR adds support for the wiki on these links. Signed-off-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
		@@ -787,6 +787,15 @@ func ExcerptBlob(ctx *context.Context) {
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	direction := ctx.FormString("direction")
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	filePath := ctx.FormString("path")
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	gitRepo := ctx.Repo.GitRepo
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	if ctx.FormBool("wiki") {
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		var err error
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		gitRepo, err = git.OpenRepositoryCtx(ctx, ctx.Repo.Repository.WikiPath())
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		if err != nil {
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			ctx.ServerError("OpenRepository", err)
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			return
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		}
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		defer gitRepo.Close()
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	}
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	chunkSize := gitdiff.BlobExcerptChunkSize
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	commit, err := gitRepo.GetCommit(commitID)
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	if err != nil {
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@@ -5,6 +5,7 @@
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package web
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import (
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	gocontext "context"
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	"net/http"
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	"os"
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	"path"
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@@ -956,7 +957,25 @@ func RegisterRoutes(m *web.Route) {
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		m.Group("/blob_excerpt", func() {
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			m.Get("/{sha}", repo.SetEditorconfigIfExists, repo.SetDiffViewStyle, repo.ExcerptBlob)
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		}, repo.MustBeNotEmpty, context.RepoRef(), reqRepoCodeReader)
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		}, func(ctx *context.Context) (cancel gocontext.CancelFunc) {
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			if ctx.FormBool("wiki") {
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				ctx.Data["PageIsWiki"] = true
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				repo.MustEnableWiki(ctx)
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				return
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			}
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			reqRepoCodeReader(ctx)
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			if ctx.Written() {
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				return
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			}
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			cancel = context.RepoRef()(ctx)
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			if ctx.Written() {
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				return
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			}
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			repo.MustBeNotEmpty(ctx)
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			return
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		})
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		m.Group("/pulls/{index}", func() {
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			m.Get(".diff", repo.DownloadPullDiff)
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@@ -4,17 +4,17 @@
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		{{if eq .GetType 4}}
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			<td class="lines-num lines-num-old" data-line-num="{{if $line.LeftIdx}}{{$line.LeftIdx}}{{end}}">
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				{{if or (eq $line.GetExpandDirection 3) (eq $line.GetExpandDirection 5) }}
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					<a role="button" class="blob-excerpt" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=down" data-anchor="{{$.Anchor}}">
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					<a role="button" class="blob-excerpt" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=down&wiki={{$.PageIsWiki}}" data-anchor="{{$.Anchor}}">
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						{{svg "octicon-fold-down"}}
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					</a>
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				{{end}}
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				{{if or (eq $line.GetExpandDirection 3) (eq $line.GetExpandDirection 4) }}
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					<a role="button" class="blob-excerpt" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=up" data-anchor="{{$.Anchor}}">
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					<a role="button" class="blob-excerpt" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=up&wiki={{$.PageIsWiki}}" data-anchor="{{$.Anchor}}">
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						{{svg "octicon-fold-up"}}
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					</a>
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				{{end}}
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				{{if eq $line.GetExpandDirection 2}}
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					<a role="button" class="blob-excerpt" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=" data-anchor="{{$.Anchor}}">
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					<a role="button" class="blob-excerpt" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=&wiki={{$.PageIsWiki}}" data-anchor="{{$.Anchor}}">
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						{{svg "octicon-fold"}}
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					</a>
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				{{end}}
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@@ -43,17 +43,17 @@
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		{{if eq .GetType 4}}
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			<td colspan="2" class="lines-num">
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				{{if or (eq $line.GetExpandDirection 3) (eq $line.GetExpandDirection 5) }}
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					<a role="button" class="blob-excerpt" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=down" data-anchor="{{$.Anchor}}">
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					<a role="button" class="blob-excerpt" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=down&wiki={{$.PageIsWiki}}" data-anchor="{{$.Anchor}}">
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						{{svg "octicon-fold-down"}}
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					</a>
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				{{end}}
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				{{if or (eq $line.GetExpandDirection 3) (eq $line.GetExpandDirection 4) }}
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					<a role="button" class="blob-excerpt" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=up" data-anchor="{{$.Anchor}}">
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					<a role="button" class="blob-excerpt" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=up&wiki={{$.PageIsWiki}}" data-anchor="{{$.Anchor}}">
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						{{svg "octicon-fold-up"}}
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					</a>
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				{{end}}
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				{{if eq $line.GetExpandDirection 2}}
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					<a role="button" class="blob-excerpt" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=" data-anchor="{{$.Anchor}}">
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					<a role="button" class="blob-excerpt" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=&wiki={{$.PageIsWiki}}" data-anchor="{{$.Anchor}}">
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						{{svg "octicon-fold"}}
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					</a>
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				{{end}}
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@@ -7,17 +7,17 @@
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				{{if eq .GetType 4}}
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					<td class="lines-num lines-num-old">
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						{{if or (eq $line.GetExpandDirection 3) (eq $line.GetExpandDirection 5) }}
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							<a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=down" data-anchor="diff-{{Sha1 $file.Name}}K{{$line.SectionInfo.RightIdx}}">
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							<a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=down&wiki={{$.root.PageIsWiki}}" data-anchor="diff-{{Sha1 $file.Name}}K{{$line.SectionInfo.RightIdx}}">
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								{{svg "octicon-fold-down"}}
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							</a>
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						{{end}}
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						{{if or (eq $line.GetExpandDirection 3) (eq $line.GetExpandDirection 4) }}
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							<a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=up" data-anchor="diff-{{Sha1 $file.Name}}K{{$line.SectionInfo.RightIdx}}">
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							<a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=up&wiki={{$.root.PageIsWiki}}" data-anchor="diff-{{Sha1 $file.Name}}K{{$line.SectionInfo.RightIdx}}">
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								{{svg "octicon-fold-up"}}
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							</a>
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						{{end}}
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						{{if eq $line.GetExpandDirection 2}}
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							<a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=" data-anchor="diff-{{Sha1 $file.Name}}K{{$line.SectionInfo.RightIdx}}">
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							<a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=&wiki={{$.root.PageIsWiki}}" data-anchor="diff-{{Sha1 $file.Name}}K{{$line.SectionInfo.RightIdx}}">
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								{{svg "octicon-fold"}}
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							</a>
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						{{end}}
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@@ -6,17 +6,17 @@
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				{{if eq .GetType 4}}
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					<td colspan="2" class="lines-num">
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						{{if or (eq $line.GetExpandDirection 3) (eq $line.GetExpandDirection 5) }}
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							<a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=down" data-anchor="diff-{{Sha1 $file.Name}}K{{$line.SectionInfo.RightIdx}}">
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							<a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=down&wiki={{$.root.PageIsWiki}}" data-anchor="diff-{{Sha1 $file.Name}}K{{$line.SectionInfo.RightIdx}}">
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								{{svg "octicon-fold-down"}}
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							</a>
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						{{end}}
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						{{if or (eq $line.GetExpandDirection 3) (eq $line.GetExpandDirection 4) }}
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							<a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=up" data-anchor="diff-{{Sha1 $file.Name}}K{{$line.SectionInfo.RightIdx}}">
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							<a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=up&wiki={{$.root.PageIsWiki}}" data-anchor="diff-{{Sha1 $file.Name}}K{{$line.SectionInfo.RightIdx}}">
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								{{svg "octicon-fold-up"}}
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							</a>
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						{{end}}
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						{{if eq $line.GetExpandDirection 2}}
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							<a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=" data-anchor="diff-{{Sha1 $file.Name}}K{{$line.SectionInfo.RightIdx}}">
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							<a role="button" class="blob-excerpt" data-url="{{$.root.RepoLink}}/blob_excerpt/{{PathEscape $.root.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=&wiki={{$.root.PageIsWiki}}" data-anchor="diff-{{Sha1 $file.Name}}K{{$line.SectionInfo.RightIdx}}">
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								{{svg "octicon-fold"}}
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							</a>
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						{{end}}
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