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fix extra newlines when copying from diff in Firefox (#7288)

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* fix extra newlines when copying from diff

See https://bugzilla.mozilla.org/show_bug.cgi?id=1273836

Basically, the <pre><code> seems to add a forced newline that is not
possible to get rid of via CSS, so I replaced it with just a <code>.

Secondly, .lines-type-marker also forced a newline in the copied text,
but that was possible to get rid of via user-select.

Safari still has a extraneous newline in the copied text of unknown
origin, but this should not block stop this PR.

* simplify .line-type-marker

* fix selector

* remove erronous ^^^

* Fix empty split diff

* Fix arc-theme-green

* fix add comment

* ensure line-num is copied too

* Update templates/repo/diff/box.tmpl

Co-Authored-By: zeripath <art27@cantab.net>

* attempt to fix safari via removing <code>

* remove useless whitespace at the end of 'class'

* remove inter-tag whitespace for code <td>s

* more inter-tag removal

* final inter-tag removal

* attempt to fix empty line copy

* move and comment getLineContent

* fix golint

* make background grey for missing added code
This commit is contained in:
silverwind 2019-06-26 23:35:07 +02:00 • committed by zeripath
parent edc94c7041
commit da23041257
9 changed files with 59 additions and 74 deletions
Download patch file Download diff file Expand all files Collapse all files

24
models/git_diff.go
View file

@ -88,6 +88,14 @@ func (d *DiffLine) GetLineTypeMarker() string {
return ""
}
// escape a line's content or return <br> needed for copy/paste purposes
func getLineContent(content string) string {
if len(content) > 0 {
return html.EscapeString(content)
}
return "<br>"
}
// DiffSection represents a section of a DiffFile.
type DiffSection struct {
Name string
@ -107,14 +115,14 @@ func diffToHTML(diffs []diffmatchpatch.Diff, lineType DiffLineType) template.HTM
switch {
case diffs[i].Type == diffmatchpatch.DiffInsert && lineType == DiffLineAdd:
buf.Write(addedCodePrefix)
buf.WriteString(html.EscapeString(diffs[i].Text))
buf.WriteString(getLineContent(diffs[i].Text))
buf.Write(codeTagSuffix)
case diffs[i].Type == diffmatchpatch.DiffDelete && lineType == DiffLineDel:
buf.Write(removedCodePrefix)
buf.WriteString(html.EscapeString(diffs[i].Text))
buf.WriteString(getLineContent(diffs[i].Text))
buf.Write(codeTagSuffix)
case diffs[i].Type == diffmatchpatch.DiffEqual:
buf.WriteString(html.EscapeString(diffs[i].Text))
buf.WriteString(getLineContent(diffs[i].Text))
}
}
@ -173,7 +181,7 @@ func init() {
// GetComputedInlineDiffFor computes inline diff for the given line.
func (diffSection *DiffSection) GetComputedInlineDiffFor(diffLine *DiffLine) template.HTML {
if setting.Git.DisableDiffHighlight {
return template.HTML(html.EscapeString(diffLine.Content[1:]))
return template.HTML(getLineContent(diffLine.Content[1:]))
}
var (
compareDiffLine *DiffLine
@ -186,22 +194,22 @@ func (diffSection *DiffSection) GetComputedInlineDiffFor(diffLine *DiffLine) tem
case DiffLineAdd:
compareDiffLine = diffSection.GetLine(DiffLineDel, diffLine.RightIdx)
if compareDiffLine == nil {
return template.HTML(html.EscapeString(diffLine.Content[1:]))
return template.HTML(getLineContent(diffLine.Content[1:]))
}
diff1 = compareDiffLine.Content
diff2 = diffLine.Content
case DiffLineDel:
compareDiffLine = diffSection.GetLine(DiffLineAdd, diffLine.LeftIdx)
if compareDiffLine == nil {
return template.HTML(html.EscapeString(diffLine.Content[1:]))
return template.HTML(getLineContent(diffLine.Content[1:]))
}
diff1 = diffLine.Content
diff2 = compareDiffLine.Content
default:
if strings.IndexByte(" +-", diffLine.Content[0]) > -1 {
return template.HTML(html.EscapeString(diffLine.Content[1:]))
return template.HTML(getLineContent(diffLine.Content[1:]))
}
return template.HTML(html.EscapeString(diffLine.Content))
return template.HTML(getLineContent(diffLine.Content))
}
diffRecord := diffMatchPatch.DiffMain(diff1[1:], diff2[1:], true)