(I determined these unicode values by anycodings_latex copying the rendered tilde character anycodings_latex from the TeXShop Preview window and anycodings_latex pasting it into the Character Viewer app anycodings_latex in the menu bar on a Mac.
So cut-and-paste of a URL with a tilde anycodings_latex from an Adobe-displayed pdf file into a anycodings_latex web browser works fine. However, Adobe Acrobat somehow anycodings_latex implemented a workaround and when anycodings_latex displaying the pdf converts this into a anycodings_latex regular "Tilde" TILDE Unicode: U+007E, UTF-8: 7E This means that anycodings_latex cut-and-paste from Mac's Preview into a anycodings_latex browser fails. (previously known as a "non-spacing anycodings_latex tilde", indicating its usage for accents anycodings_latex over another character) and that is what anycodings_latex Mac's Preview renders. Investigating further, I learned that anycodings_latex the character that latex puts into the anycodings_latex pdf file is not a regular tilde anycodings_latex character but a "Combining Tilde" COMBINING TILDE Unicode: U+0303, UTF-8: CC 83 Tldr: To avoid some of the difficulties anycodings_latex of typesetting a proper tilde ~ anycodings_latex character, I recommend adding \usepackage anycodings_latex command will display a URL with tildes anycodings_latex correctly, but forces it to use a anycodings_latex fixed-space terminal font, and there are anycodings_latex times when you want to use a tilde anycodings_latex somewhere besides in a URL.) After wasting a lot of time on a related anycodings_latex problem with LaTeXing a tilde, I thought anycodings_latex I should record my results here in case anycodings_latex it is a help to anyone else.