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Fix crash in short link processor (#13839) (#13841)

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Fixes #13819
This commit is contained in:
mrsdizzie 2020-12-03 22:08:48 -05:00 committed by GitHub
parent 87997cccbb
commit 798fdeae45
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1 changed files with 12 additions and 10 deletions
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22
modules/markup/html.go
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@ -632,16 +632,18 @@ func shortLinkProcessorFull(ctx *postProcessCtx, node *html.Node, noLink bool) {
// When parsing HTML, x/net/html will change all quotes which are
// not used for syntax into UTF-8 quotes. So checking val[0] won't
// be enough, since that only checks a single byte.
if (strings.HasPrefix(val, "“") && strings.HasSuffix(val, "”")) ||
(strings.HasPrefix(val, "‘") && strings.HasSuffix(val, "’")) {
const lenQuote = len("‘")
val = val[lenQuote : len(val)-lenQuote]
} else if (strings.HasPrefix(val, "\"") && strings.HasSuffix(val, "\"")) ||
(strings.HasPrefix(val, "'") && strings.HasSuffix(val, "'")) {
val = val[1 : len(val)-1]
} else if strings.HasPrefix(val, "'") && strings.HasSuffix(val, "’") {
const lenQuote = len("‘")
val = val[1 : len(val)-lenQuote]
if len(val) > 1 {
if (strings.HasPrefix(val, "“") && strings.HasSuffix(val, "”")) ||
(strings.HasPrefix(val, "‘") && strings.HasSuffix(val, "’")) {
const lenQuote = len("‘")
val = val[lenQuote : len(val)-lenQuote]
} else if (strings.HasPrefix(val, "\"") && strings.HasSuffix(val, "\"")) ||
(strings.HasPrefix(val, "'") && strings.HasSuffix(val, "'")) {
val = val[1 : len(val)-1]
} else if strings.HasPrefix(val, "'") && strings.HasSuffix(val, "’") {
const lenQuote = len("‘")
val = val[1 : len(val)-lenQuote]
}
}
props[key] = val
}