xah talk show 2022-05-16 emacs, most efficient way to toggle letter case, upcase sentences, reformat lines, problems of fill-region

• demo xah-toggle-letter-case
• demo xah-upcase-sentence Emacs: Upcase Sentences
• demo xah-reformat-lines
• explain problems of emacs fill-region commands.

• Emacs: Reformat Line Wrap
• Emacs: Hard Wrap Lines
• Emacs: Reformat Lines for Source Code

• Emacs: Xah HTML Mode (xah-html-mode.el)
• https://elpa.nongnu.org/nongnu/xah-fly-keys.html