i18n ignore leading and trailing spaces #13114
Description
I'm submitting a ... (check one with "x")
[x] bug report => search github for a similar issue or PR before submitting
[ ] feature request
[ ] support request => Please do not submit support request here, instead see https://github.com/angular/angular/blob/master/CONTRIBUTING.md#question
Current behavior
now ng-xi18n will generate xliff including spaces, for example there is an element
<p i18n>
复制
</p>
it will generate
<source>
复制
</source>it's really weak to rely on spaces since they could changed Unintentionally or even by IDE reformat code.
Expected behavior
ignore leading and tailing spaces