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go/doc: use correct escaper for URL
Despite the name, URL escaping is for a small subpiece of the URL only. This particular URL is being emitted in an <a href=""> tag and in that context it should be HTML escaped, not URL escaped. In addition to fixing a bug, this change cuts a dependency chain from go/doc to net, clearing the way for use of cgo (which imports go/doc) during the compilation of package net. R=gri CC=golang-dev https://golang.org/cl/1960050
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@ -8,7 +8,6 @@ package doc
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import (
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"go/ast"
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"http" // for URLEscape
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"io"
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"regexp"
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"strings"
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@ -227,7 +226,7 @@ func emphasize(w io.Writer, line []byte, words map[string]string, nice bool) {
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// write match
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if len(url) > 0 {
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w.Write(html_a)
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w.Write([]byte(http.URLEscape(url)))
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template.HTMLEscape(w, []byte(url))
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w.Write(html_aq)
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}
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if italics {
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