* adjusted `ustr_match_keyword` for consistency
* implement `byte_quote` natively
* implement `buf_byte_quote` using `byte_quote` instead of the reverse
* rename `buf_encode_byte()` as `buf_quote_byte()`
* change `buf_printf` return value for consistency
* let `strquote` always return the length of the conversion like `snprintf`
- 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
- make `do-goto` accept a 1-based column number
- parse 1-based column numbers in filenames from the command line
- display 1-based column number in status lines
*equivalents* are strings that should compare equal in a `compare-windows`
session. You can define such strings in a **.qerc** file in the directory of
one of the files being compared. This helps ignoring known changes such as
type of function renaming... Here is an example to help compare files between
the `bellard/quickjs` and the `quickjs-ng/quickjs` repositories:
```
define_equivalent("JS_DupValue(ctx, ", "js_dup(");
define_equivalent("JSValue", "JSValueConst");
define_equivalent("JS_NewInt32(ctx, ", "js_int32(");
define_equivalent("JS_NewInt32(ctx,\n", "js_int32(");
define_equivalent("JS_NewUint32(ctx, ", "js_uint32(");
define_equivalent("JS_NewUint32(ctx,\n", "js_uint32(");
define_equivalent("JS_NewBool(ctx, ", "js_bool(");
define_equivalent("JS_NewFloat64(ctx, ", "js_float64(");
define_equivalent("JS_EXTERN ", "");
define_equivalent("JS_EXTERN JS", "JS");
define_equivalent("JS_EXTERN JS_", "JS_");
ignore_equivalent = 1;
```
Other changes were necessary for proper utf8 skipping:
- add `utf8_prefix_len(str1, str2)` to compute the length of a common initial
prefix not falling inside UTF-8 encoded codepoints.
- add `utf8_decode_prev` to get the previous codepoint
- add `eb_match_str_utf8_reverse`
* Bind `next-buffer` to `C-x C-right` and `previous-buffer` to `C-x left` just like GNU Emacs
* next-buffer & previous-buffer skip buffers with BF_SYSTEM flag.
* next-buffer & previous-buffer command is ignored from minibuffer and popups.
* fix compilation errors on linux
* support quote as digit separator in C/C++ modes
- this convention is horrible!
- why not use _ which is compatible with the ppnumber syntax?
* bump VERSION to 6.1.1b
* import libunicode and libregexp from QuickJS
* add utility functions:
min/max_uint32, min/max_int64 clz/ctz/32/64
bswap12/32/64
* add packed get and put inline functions
* add DynBuf package (dbuf_xxx)
* add unicode_to/from_utf8()
* add regex support in eb_search
* add partial regex support in query_replace: no subexpressions support
* bumped VERSION to 6.1.0
* remove qfribidi.h and qfribidi.c
* simplify get_mirror_char(), use table from Unicode 15.0
* improve bidir_get_type(), compact_list()
* use combined type tests for 3, 4 and 6 types
* bumped VERSION to 5.4.2
