Cppcheck produces the following warnings:
```
shared_string.hh:27:49: portability: Shifting signed 32-bit value by 31 bits is implementation-defined behaviour
shared_string.hh:27:49: error: Signed integer overflow for expression '1<<31'.
```
Fixes#4340
Cppcheck produces the following warning:
```
keymap_manager.hh:54:37: performance: Function parameter 'user_mode_name' should be passed by const reference.
```
Fixes#4340
Enable it if supported by default, let the user override it with
the existing terminal_synchronized ui option.
This should finalize work discussed on #4317
They are quite different use cases, and this allow moving InsertMode
to input_handler.hh which is what uses it.
This also cleans up the code as we can get rid of get_insert_pos and
rely more on SelectionList::for_each.
This commit prevents `ga` from returning a “no last buffer” error
when the previously displayed buffer was removed.
Since the jumps list keeps track of the order in which buffers were
displayed already, handling arbitrary `delete-buffer`s as well,
cycle through it to implement `ga` instead of storing a pointer.
Note that this commit doesn't take into account buffer flags that
might exclude some buffers from being cycled over by commands.
Fixes#1840
OCaml does not have line comments, and as far as I can tell neither
does Coq. Setting it to '' (like markdown and html do) throws an error
that can be handled or displayed instead of inserting the default '#'.
I dedicate any and all copyright interest in this software to the
public domain. I make this dedication for the benefit of the public at
large and to the detriment of my heirs and successors. I intend this
dedication to be an overt act of relinquishment in perpetuity of all
present and future rights to this software under copyright law.
The closing ``` in the following example was not detected because the
indented code block highlighter was higher up in the hierarchy than the
fenced code block highlighter:
```
indented
```
The codeblock highlighter used to be inline so that it has an effect
inside listblocks. This commits adds a listblock/codeblock highlighter
as a replacement.
Fixes#4351
