This commit allows a help message to be printed when a `-help` flag is
passed to the editor, which will subsequently quit after a summary and a
description of all the flags available have been displayed.
The GNU convention (passing a single `--help` argument to the program)
is also supported, although undocumented.
The man page also now documents the `+:` argument, although unrelated to
the original changeset.
Purging unused strings could get pretty expensive with a lot of
interned strings as it requiered iterating on all of them. Use
a flag on the refcount of the StringData to see if the string
is interned, and notify the StringRegistry in this case.
This should improve the speed of editing big files with many words,
such as the one described in #1195
This round trip through an input callback expected to call
is_key_available and get_key was overcomplicated, just send the
keys as they arrive, the client is already buffering due to urgent
event mode.
The recent change that introduced defered client deletion made the local
client destruction happens too late, putting the terminal in a bad state
when we resumed the process as client only.
Add a ColumnCount type and use it in place of CharCount whenever
more appropriate, take column size of codepoints into account for
vertical movements and docstring wrapping.
Fixes#811
Client quitting no longer immediately unwinds, client is just pushed
for deletion until we get back to the main loop, similarly to what
happens for buffer and window deletion.
This string option is used to get all the additional characters
that should be considered as "word" character for the purpose of
insert mode completion.
Fixes#758
This commit introduces the `readonly` variable as well as the `-ro`
command line option which prevent buffers from being overwritten on
disk when the `write` command is used without arguments. Some buffers
can selectively be put in readonly mode by setting the `readonly`
variable on the `buffer` scope, the `global` mode will affect all
buffers (even those who will be open subsequently), using the `window`
scope will have no effect.
Closes#685
