The configure script no longer recognizes "CONFIG_UTF_8=yes" lines
in custom features.conf files. They will have to be changed to
"CONFIG_UTF8=yes". This incompatibility was deemed acceptable
because no released version of ELinks supports CONFIG_UTF_8.
The --enable-utf-8 option was not renamed.
Suggested by Miciah on #elinks.
What was renamed:
add_utf_8 => add_utf8
cp2utf_8 => cp2utf8
encode_utf_8 => encode_utf8
get_translation_table_to_utf_8 => get_translation_table_to_utf8
goto invalid_utf_8_start_byte => goto invalid_utf8_start_byte
goto utf_8 => goto utf8
goto utf_8_select => goto utf8_select
terminal_interlink.utf_8 => terminal_interlink.utf8
utf_8_to_unicode => utf8_to_unicode
What was not renamed:
terminal._template_.utf_8_io option, TERM_OPT_UTF_8_IO
Compatibility with existing elinks.conf files would require an alias.
--enable-utf-8
Because the name of the charset is UTF-8, --enable-utf-8 looks better
than --enable-utf8.
CONFIG_UTF_8
Will be renamed in a later commit.
Unicode/utf_8.cp, table_utf_8, aliases_utf_8
Will be renamed in a later commit.
form_state.state_cell is no longer used for FC_TEXT, FC_PASSWORD, nor FC_FILE.
Instead, get_link_cursor_offset() computes the cell with utf8_ptr2chars
(a new function) or utf8_ptr2cells. This shouldn't slow down ELinks too
much, as it's done only for the selected link and only once per redraw.
The left side of a scrolled input field is always aligned at a
character boundary. The right side might not be.
Form fields and BFU text-input widgets then convert from UCS-4 to UTF-8.
If not all UTF-8 bytes fit, they don't insert anything. Thus it is no
longer possible to get invalid UTF-8 by hitting the length limit.
It is unclear to me which charset is supposed to be used for strings
in internal buffers. I made BFU insert UTF-8 whenever CONFIG_UTF_8,
but form fields use the charset of the terminal; that may have to be
changed.
As a side effect, this change should solve bug 782, because
term_send_ucs no longer encodes in UTF-8 if CONFIG_UTF_8 is defined.
I think the UTF-8 and codepage encoding calls I added are safe, too.
A similar bug may still surface somewhere else, but 782 could be
closed for now.
This change also lays the foundation for binding actions to non-ASCII
keys, but the keystroke name parser doesn't yet support that.
The CONFIG_UTF_8 mode does not currently support non-ASCII characters
in hot keys, either.
To reproduce the bug before this patch:
Enable CONFIG_UTF_8, UTF-8 I/O, and UTF-8 charset.
Go to www.google.com and type "abc" in the text input field.
Then press Left. The cursor jumps to "a" when it should go to "c".
Including double-width glyph support.
Note: textarea is now drawn with blank collumn at end of lines. It seems
that this is more intuitive for users. It behaves similar as textareas in
graphical interfaces. I hope it will hold your interest.
+----+ +----+ +----+
|aaA | [right] |aaa_| [right] |aaa |
|aaa | |aaa | |Aaa |
|bb | |bb | |bb |
+----+ +----+ +----+
+----+ +----+ +----+
|Aaa | [end] |aaa_| [c] |aaa |
|aaa | |aaa | |Caa |
|bb | |bb | |abb |
+----+ +----+ +----+
A, _, C - cursor positions.
[right] - right arrow
[end] - ACT_END (End button)
[c] - Letter c.
Now this code:
<textarea rows="3" cols="3">aaaaaabb</textarea>
represents textarea with 3x3 positions for chars.
Before this texteare behaved some kind of weirdly. That code above was
rendered like this:
+----+
|aaaa|
|aabb|
|_ |
+----+
The menu shows a list of all fields of a form, with the possibility to jump
right to that form field when selecting an entry. The menu text is the
basic form field label "Radio button", "Text field", etc. with the form
field name or alt text as the right menu text.
It introduces a new main action called link-form-menu with no default
binding.
Requested by Klaus Knopper, as a mean to improve accessibility for complex,
overloaded pages like ebay.com.
