Less version 603

Version 603 was released for beta testing on 15 March 2022.

These are the differences between version 590 and version 603:

• Add the --header option.
• Add the --no-number-headers option.
• Add the --status-line option.
• Add the --redraw-on-quit option.
• Add the --search-options option.
• Add the --exit-follow-on-close option.
• Add 'H' color type to set color of header lines.
• Add #version conditional to lesskey.
• Add += syntax to variable section in lesskey files.
• Allow option name in -- command to end with '=' in addition to '\n'.
• Add $HOME/.config to possible locations of lesskey file.
• Add $XDG_STATE_HOME and $HOME/.local/state to possible locations of history file.
• Don't read or write history file in secure mode.
• Fix display of multibyte and double-width chars in prompt.
• Fix ESC-BACKSPACE command when BACKSPACE key does not send 0x08.
• Add more \k codes to lesskey format.
• Fix bug when empty file is modified while viewing it.
• Fix bug when parsing a malformed lesskey file.
• Fix bug scrolling history when --incsearch is set.
• Fix buffer overflow when invoking lessecho with more than 63 -m/-n options.
• Fix bug restoring color at end of highlighted text.
• Fix bug in parsing lesskey file.
• Defer moving cursor to lower left in some more cases.
• Suppress TAB filename expansion in some cases where it doesn't make sense.