When characters are added via Verbatim Input or by pressing <Tab>,
the prepend flag should be retained, just like when characters are
typed directly.

This fixes https://savannah.gnu.org/bugs/?52956.

This fixes https://savannah.gnu.org/bugs/?53088.

When copying a string, source and destination may not be equal --
complain loudly when they are, instead of failing to free memory.

Also, instead of freeing the destination string and then allocating
it afresh, just reallocate it -- that should be slightly quicker.

When doing for example: ^W xx ^R ^C ^W, the "xx" would again be shown
after the prompt.  This is wrong -- when starting a new search, the
current answer should be empty.
Reported-by: Marco Diego Aurélio Mesquita <marcodiegomesquita@gmail.com>

Instead of weaving back and forth between do_search()/do_replace() and
search_init() every time that one of the options is toggled, just keep
looping in the latter function until the user presses <Enter>.

The weaving for the do_gotolinecolumn() function remains, but is
shortened to involve only search_init().

This fixes https://savannah.gnu.org/bugs/?53062.

Suggested-by: Mike Frysinger <vapier@gentoo.org>

This addresses https://savannah.gnu.org/bugs/?48992.

In this way a single keystroke can produce a fragment of text or a
series of commands, or a mix of the two.  It is like a prerecorded
macro.

This fulfills https://savannah.gnu.org/bugs/?52931.

This brings it in line with the other three "flip" toggles.

This fixes https://savannah.gnu.org/bugs/?52997.

This fixes https://savannah.gnu.org/bugs/?52972

.
Reported-by: Brand Huntsman <alpha@qzx.com>

When a fragment of help text does not contain any whitespace that
we can wrap at, just advance the pointer, because returning zero
would mean we stay forever at the same place: nano would hang.

After commit e739448c, macros should work also when ncurses produces
escape sequences instead of keycodes.

So one doesn't find it when grepping for get_input().

Reported-by: Tom Levy <tomlevy93@gmail.com>

That is, call display_string() just on the filename, not on the rest
of the prompt text.

This fixes https://savannah.gnu.org/bugs/?52967

.
Reported-by: Andreas Schamanek <schamane@fam.tuwien.ac.at>

And one for me, for the much changed keyboard stuff.

Also, actually add the long option --trimblanks to the table.

This fixes the second part of https://savannah.gnu.org/bugs/?52960.

This fixes the first part of https://savannah.gnu.org/bugs/?52960.

This fixes https://savannah.gnu.org/bugs/?52930

.
Reported-by: Michail Tsiolkas <mtsio@cryptolab.net>