* remove popups, sidepanes, helppanes.
* verify file existence before opening.
* refine error/source windows:
* find window showing the error source buffer,
split a new one if none are found.
* if current window is showing error source buffer,
find file in next window, split a new one if none are found.
* center cursor after going to error.
* show error line on window's first line.
* center cursor after going to error.
* improve color combining code for diff/patch output: preserve code
syntax coloring on red or green background.
* improve `curline_style` handling (needs more work)
* add `QETermStyle` transparent color handling in `apply_style`
* highlight trailing blanks in a single place
* transpose `qe_term_get_style()` arguments for consistency
* add `qe_term_style_string()` and `qe_styledef_string()`
* extend style string parser to accept missing foreground color
* add command to compare buffer with its file in a popup
* add [d] for diff when prompting for buffer/file synching
* add default behavior for buffer/file synching
* add CONFIG_LINUX, CONFIG_FREEBSD, CONFIG_OPENBSD, CONFIG_NETBSD
* add diff styles
* keep track of original file size and time in buffer data
* check for file changes upon window change, buffer modification and save
* prompt for reloading buffer contents and other options
- set `MAN_KEEP_FORMATTING=1` and `MANPAGER=cat` for the man
command and handle overstriking in the terminal emulation.
- this approach works on macOS, linux, FreeBSD and OpenBSD
- apply infinite-height prior to winsize initialization.
- use `LESS_LINES` environment variable.
- use `PAGER=less -F` to make less quit at the end of the man page
The behavior follows this priority order:
1. reuse an existing window already displaying the buffer,
2. if shell-command-other-window is not set, use the current
window, otherwise
3. select the largest available non-active window.
4. split a new window if no sutiable window is found.
5. fall back to the current window if splitting fails.
- `shell_buffer_read_only` controls if the shell buffer should become
read-only and use pager-mode when not interactive
- `shell_mode_auto_interactive` controls if the shell interactive mode is
switched to and from automatically based on cursor movement commands
- disable auto interactive if region is highlighted
- fix crash bug in qe_register_emulation_bindings for "emacs" emulation
* decouple interactive mode from cursor position.
* clear readonly when entering interactive mode and
restore when leaving it.
* simplify navigation logic by removing offset-based toggling.
* set pager mode on interactive shell exit.
* check for active processes in shell buffers before reusing them,
and prompt the user to kill the running process to avoid leaving
it detached and unreachable.
fixes a race condition where pty data was lost on process exit.
The pid callback now flags the exit status, while `shell_read_cb`
handles the final teardown. This prevents truncation for
high-throughput processes.
- rename `edit_new` as `qe_new_window`
- report error in `qe_new_buffer` and `qe_new_window` upon failure
- rename `qe_find_buffer_file` as `qe_find_buffer_filename`
- rename `read_charset` as `qe_parse_charset`
- reset yank buffer references in `eb_clear()`
- make `qe_init()` return error code and abort upon error
* Fix `put_status`/`put_error` behavior
- use `put_error` instead of `put_status` for command errors
- prevent status message output to console during initialization
- use `put_error` for side effects in command errors
- add `&` prefix in status messages to force screen flush
- flush screen in `qe_display()`, remove redundant calls to `dpy_flush`
- fix gcc compilation errors and warnings
- remove most references to `global_screen`
- free font cache before closing the screen
- prevent mouse handling upon focus detection
* drop CI on macos-12
- intialize `tty_mk`, `tty_mouse` and `tty_clipboard` to `-1` for automatic
- command line options force setting
- otherwise, configure support from environment variables (for now)
* add `find_indent` and `make_indent` ancillary functions
* add `untabulate` on `S-TAB` to remove one indentation level
* rename `do_tab` as `do_tabulate` for consistency
* `tabulate` indents the region one level if visible
* add `indent-rigidly` commands: indent block interactively
* pass const `char32_t` array and `QETermStyle` array to `ColorizeFunc`
* add `cp_colorize_line()` wrapper to call colorizer function on null
terminated buffer.
* remove unused `EditBuffer` colorize fields
* remove `EditState` field `colorize_func`: rely on `colorize_mode` only
* no longer combine style into codepoint buffer.
* remove `STYLE_BITS`, `STYLE_SHIFT`, `CHAR_MASK`
* rename `set_colorize_func` as `set_colorize_mode`
* rename `SET_COLOR` and `SET_COLOR1` as `SET_STYLE` and `SET_STYLE1`
* add documentation for buffer API functions
- add `repeat` command on `C-x z`
- add `repeat-mode`, always enabled
- cycle all matching tags in current file on `goto-tag` and `find-tag`
- set up `repeat-mode` for these commands:
- `undo` on `C-x u` (`u` repeats `undo`, `r` performs `redo`)
- `undo` on `C-x r` (`r` repeats `redo`, `u` performs `undo`)
- `find-window-left`, `find-window-right`, `find-window-up`, `find-window-dow`
repeat navigation on `up`, `down`, `left`, `right`
- `next-error`, `previous-error`: `M-n` and `M-p` repeat in corresponding direction
- `next-buffer`, `previous-buffer: repeat buffers nagivation with `left` and `right`
- `enlarge-window` / `shrink-window`: repeat resizing on `^`, `v`, `{`, `}`
and cursor movement keys
- `goto-tag` on `C-x ,` goto next tag with `,` and `.`
- `call-last-kbd-macro` on `C-x e`: repeat macro on `e`
- add `eb_count_buffers` and `eb_get_buffer_from_index` for safe buffer navigation
- add transient bindings, known as repeat maps in GNU emacs
- pass `KeyDef **lp` (aka key maps) instead of mode for binding commands
- replace `do_next_buffer` and `do_prevous_buffer` with repeatable command
`do_buffer_navigation`
- fix `bufed_select` crash bug when selecting buffer from a regular window
