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https://github.com/go-gitea/gitea
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5b89670a31
One of the proposals in #23328 This PR introduces a simple expression calculator (templates/eval/eval.go), it can do basic expression calculations. Many untested template helper functions like `Mul` `Add` can be replaced by this new approach. Then these `Add` / `Mul` / `percentage` / `Subtract` / `DiffStatsWidth` could all use this `Eval`. And it provides enhancements for Golang templates, and improves readability. Some examples: ---- * Before: `{{Add (Mul $glyph.Row 12) 12}}` * After: `{{Eval $glyph.Row "*" 12 "+" 12}}` ---- * Before: `{{if lt (Add $i 1) (len $.Topics)}}` * After: `{{if Eval $i "+" 1 "<" (len $.Topics)}}` ## FAQ ### Why not use an existing expression package? We need a highly customized expression engine: * do the calculation on the fly, without pre-compiling * deal with int/int64/float64 types, to make the result could be used in Golang template. * make the syntax could be used in the Golang template directly * do not introduce too much complex or strange syntax, we just need a simple calculator. * it needs to strictly follow Golang template's behavior, for example, Golang template treats all non-zero values as truth, but many 3rd packages don't do so. ### What's the benefit? * Developers don't need to add more `Add`/`Mul`/`Sub`-like functions, they were getting more and more. Now, only one `Eval` is enough for all cases. * The new code reads better than old `{{Add (Mul $glyph.Row 12) 12}}`, the old one isn't familiar to most procedural programming developers (eg, the Golang expression syntax). * The `Eval` is fully covered by tests, many old `Add`/`Mul`-like functions were never tested. ### The performance? It doesn't use `reflect`, it doesn't need to parse or compile when used in Golang template, the performance is as fast as native Go template. ### Is it too complex? Could it be unstable? The expression calculator program is a common homework for computer science students, and it's widely used as a teaching and practicing purpose for developers. The algorithm is pretty well-known. The behavior can be clearly defined, it is stable.
145 lines
8 KiB
Handlebars
145 lines
8 KiB
Handlebars
{{template "base/head" .}}
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<div role="main" aria-label="{{.Title}}" class="page-content repository file list {{if .IsBlame}}blame{{end}}">
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{{template "repo/header" .}}
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<div class="ui container {{if .IsBlame}}fluid padded{{end}}">
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{{template "base/alert" .}}
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{{if and (not .HideRepoInfo) (not .IsBlame)}}
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<div class="ui repo-description">
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<div id="repo-desc">
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{{$description := .Repository.DescriptionHTML $.Context}}
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{{if $description}}<span class="description">{{$description}}</span>{{else if .IsRepositoryAdmin}}<span class="no-description text-italic">{{.locale.Tr "repo.no_desc"}}</span>{{end}}
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<a class="link" href="{{.Repository.Website}}">{{.Repository.Website}}</a>
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</div>
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{{if .RepoSearchEnabled}}
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<div class="ui repo-search">
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<form class="ui form ignore-dirty" action="{{.RepoLink}}/search" method="get">
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<div class="field">
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<div class="ui action input{{if .CodeIndexerUnavailable}} disabled left icon{{end}}"{{if .CodeIndexerUnavailable}} data-tooltip-content="{{.locale.Tr "repo.search.code_search_unavailable"}}"{{end}}>
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<input name="q" value="{{.Keyword}}"{{if .CodeIndexerUnavailable}} disabled{{end}} placeholder="{{.locale.Tr "repo.search.search_repo"}}">
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{{if .CodeIndexerUnavailable}}
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<i class="icon gt-df gt-ac gt-jc">{{svg "octicon-alert"}}</i>
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{{end}}
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<button class="ui icon button"{{if .CodeIndexerUnavailable}} disabled{{end}} type="submit">
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{{svg "octicon-search"}}
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</button>
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</div>
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</div>
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</form>
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</div>
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{{end}}
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</div>
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<div class="gt-df gt-ac gt-fw gt-mt-3" id="repo-topics">
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{{range .Topics}}<a class="ui repo-topic large label topic" href="{{AppSubUrl}}/explore/repos?q={{.Name}}&topic=1">{{.Name}}</a>{{end}}
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{{if and .Permission.IsAdmin (not .Repository.IsArchived)}}<button id="manage_topic" class="ui button tiny tertiary gt-ml-2">{{.locale.Tr "repo.topic.manage_topics"}}</button>{{end}}
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</div>
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{{end}}
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{{if and .Permission.IsAdmin (not .Repository.IsArchived)}}
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<div class="ui form gt-hidden gt-df gt-mt-4" id="topic_edit">
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<div class="field gt-f1 gt-mr-3">
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<div class="ui fluid multiple search selection dropdown" data-text-count-prompt="{{.locale.Tr "repo.topic.count_prompt"}}" data-text-format-prompt="{{.locale.Tr "repo.topic.format_prompt"}}">
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<input type="hidden" name="topics" value="{{range $i, $v := .Topics}}{{.Name}}{{if Eval $i "+" 1 "<" (len $.Topics)}},{{end}}{{end}}">
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{{range .Topics}}
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{{/* keey the same layout as Fomantic UI generated labels */}}
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<a class="ui label transition visible gt-cursor-default" data-value="{{.Name}}" style="display: inline-block !important;">{{.Name}}{{svg "octicon-x" 16 "delete icon"}}</a>
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{{end}}
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<div class="text"></div>
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</div>
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</div>
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<div>
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<button class="ui basic button secondary" id="cancel_topic_edit">{{.locale.Tr "cancel"}}</button>
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<button class="ui primary button" id="save_topic" data-link="{{.RepoLink}}/topics">{{.locale.Tr "save"}}</button>
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</div>
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</div>
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{{end}}
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{{if .Repository.IsArchived}}
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<div class="ui warning message">
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{{.locale.Tr "repo.archive.title"}}
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</div>
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{{end}}
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{{template "repo/sub_menu" .}}
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<div class="repo-button-row gt-df gt-ac gt-sb gt-fw">
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<div class="gt-df gt-ac gt-fw gt-gap-y-3">
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{{template "repo/branch_dropdown" dict "root" .}}
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{{$n := len .TreeNames}}
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{{$l := Eval $n "-" 1}}
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<!-- If home page, show new pr. If not, show breadcrumb -->
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{{if eq $n 0}}
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{{if and .CanCompareOrPull .IsViewBranch (not .Repository.IsArchived)}}
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<a href="{{CompareLink .BaseRepo .Repository .BranchName}}">
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<button id="new-pull-request" class="ui compact basic button" data-tooltip-content="{{if .PullRequestCtx.Allowed}}{{.locale.Tr "repo.pulls.compare_changes"}}{{else}}{{.locale.Tr "action.compare_branch"}}{{end}}"><span class="text">{{svg "octicon-git-pull-request"}}</span></button>
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</a>
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{{end}}
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<a href="{{.Repository.Link}}/find/{{.BranchNameSubURL}}" class="ui compact basic button">{{.locale.Tr "repo.find_file.go_to_file"}}</a>
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{{end}}
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{{if or .CanAddFile .CanUploadFile}}
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<button class="ui basic compact dropdown jump icon button gt-mr-2"{{if not .Repository.CanEnableEditor}} disabled{{end}}>
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<span class="text">{{.locale.Tr "repo.editor.add_file"}}</span>
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<div class="menu">
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{{if .CanAddFile}}
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<a class="item" href="{{.RepoLink}}/_new/{{.BranchName | PathEscapeSegments}}/{{.TreePath | PathEscapeSegments}}">
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{{.locale.Tr "repo.editor.new_file"}}
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</a>
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{{end}}
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{{if .CanUploadFile}}
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<a class="item" href="{{.RepoLink}}/_upload/{{.BranchName | PathEscapeSegments}}/{{.TreePath | PathEscapeSegments}}">
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{{.locale.Tr "repo.editor.upload_file"}}
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</a>
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{{end}}
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{{if .CanAddFile}}
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<a class="item" href="{{.RepoLink}}/_diffpatch/{{.BranchName | PathEscapeSegments}}/{{.TreePath | PathEscapeSegments}}">
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{{.locale.Tr "repo.editor.patch"}}
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</a>
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{{end}}
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</div>
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{{svg "octicon-triangle-down" 14 "dropdown icon"}}
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</button>
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{{end}}
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{{if and (eq $n 0) (.Repository.IsTemplate)}}
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<a role="button" class="ui primary compact button" href="{{AppSubUrl}}/repo/create?template_id={{.Repository.ID}}">
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{{.locale.Tr "repo.use_template"}}
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</a>
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{{end}}
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{{if ne $n 0}}
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<span class="ui breadcrumb repo-path gt-ml-2"><a class="section" href="{{.RepoLink}}/src/{{.BranchNameSubURL}}" title="{{.Repository.Name}}">{{EllipsisString .Repository.Name 30}}</a>{{range $i, $v := .TreeNames}}<span class="divider">/</span>{{if eq $i $l}}<span class="active section" title="{{$v}}">{{EllipsisString $v 30}}</span>{{else}}{{$p := index $.Paths $i}}<span class="section"><a href="{{$.BranchLink}}/{{PathEscapeSegments $p}}" title="{{$v}}">{{EllipsisString $v 30}}</a></span>{{end}}{{end}}</span>
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{{end}}
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</div>
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<div class="gt-df gt-ac">
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<!-- Only show clone panel in repository home page -->
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{{if eq $n 0}}
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<div class="ui action tiny input" id="clone-panel">
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{{template "repo/clone_buttons" .}}
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<button id="more-btn" class="ui basic small compact jump dropdown icon button" data-tooltip-content="{{.locale.Tr "repo.more_operations"}}">
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{{svg "octicon-kebab-horizontal"}}
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<div class="menu">
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{{if not $.DisableDownloadSourceArchives}}
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<a class="item archive-link" href="{{$.RepoLink}}/archive/{{PathEscapeSegments $.RefName}}.zip" rel="nofollow">{{svg "octicon-file-zip" 16 "gt-mr-3"}}{{.locale.Tr "repo.download_zip"}}</a>
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<a class="item archive-link" href="{{$.RepoLink}}/archive/{{PathEscapeSegments $.RefName}}.tar.gz" rel="nofollow">{{svg "octicon-file-zip" 16 "gt-mr-3"}}{{.locale.Tr "repo.download_tar"}}</a>
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<a class="item archive-link" href="{{$.RepoLink}}/archive/{{PathEscapeSegments $.RefName}}.bundle" rel="nofollow">{{svg "octicon-package" 16 "gt-mr-3"}}{{.locale.Tr "repo.download_bundle"}}</a>
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{{if .CitiationExist}}
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<a class="item" id="cite-repo-button">{{svg "octicon-cross-reference" 16 "gt-mr-3"}}{{.locale.Tr "repo.cite_this_repo"}}</a>
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{{end}}
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{{end}}
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<a class="item js-clone-url-vsc" href="vscode://vscode.git/clone?url={{.CloneButtonOriginLink.HTTPS}}">{{svg "gitea-vscode" 16 "gt-mr-3"}}{{.locale.Tr "repo.clone_in_vsc"}}</a>
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</div>
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</button>
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{{template "repo/clone_script" .}}{{/* the script will update `.js-clone-url` and related elements */}}
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</div>
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{{template "repo/cite/cite_modal" .}}
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{{end}}
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{{if and (ne $n 0) (not .IsViewFile) (not .IsBlame)}}
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<a class="ui button" href="{{.RepoLink}}/commits/{{.BranchNameSubURL}}/{{.TreePath | PathEscapeSegments}}">
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{{svg "octicon-history" 16 "gt-mr-3"}}{{.locale.Tr "repo.file_history"}}
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</a>
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{{end}}
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</div>
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</div>
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{{if .IsViewFile}}
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{{template "repo/view_file" .}}
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{{else if .IsBlame}}
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{{template "repo/blame" .}}
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{{else}}
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{{template "repo/view_list" .}}
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{{end}}
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</div>
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</div>
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{{template "base/footer" .}}
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