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This commit introduces a new config option for how to handle shifted arrow keys. In the default mode (SHARROW_APPLICATION), we do what we've always done: Ctrl flips the arrow keys between sending their most usual escape sequences (ESC [ A ... ESC [ D) and sending the 'application cursor keys' sequences (ESC O A ... ESC O D). Whichever of those modes is currently configured, Ctrl+arrow sends the other one. In the new mode (SHARROW_BITMAP), application cursor key mode is unaffected by any shift keys, but the default sequences acquire two numeric arguments. The first argument is 1 (reflecting the fact that a shifted arrow key still notionally moves just 1 character cell); the second is the bitmap (1 for Shift) + (2 for Alt) + (4 for Ctrl), offset by 1. (Except that if _none_ of those modifiers is pressed, both numeric arguments are simply omitted.) The new bitmap mode is what current xterm generates, and also what Windows ConPTY seems to expect. If you start an ordinary Command Prompt and launch into WSL, those are the sequences it will generate for shifted arrow keys; conversely, if you run a Command Prompt within a ConPTY, then these sequences for Ctrl+arrow will have the effect you expect in cmd.exe command-line editing (going backward or forward a word). For that reason, I enable this mode unconditionally when launching Windows pterm.
This is the README for PuTTY, a free Windows and Unix Telnet and SSH
client.
PuTTY is built using CMake <https://cmake.org/>. To compile in the
simplest way (on any of Linux, Windows or Mac), run these commands in
the source directory:
cmake .
cmake --build .
Documentation (in various formats including Windows Help and Unix
`man' pages) is built from the Halibut (`.but') files in the `doc'
subdirectory using `doc/Makefile'. If you aren't using one of our
source snapshots, you'll need to do this yourself. Halibut can be
found at <https://www.chiark.greenend.org.uk/~sgtatham/halibut/>.
The PuTTY home web site is
https://www.chiark.greenend.org.uk/~sgtatham/putty/
If you want to send bug reports or feature requests, please read the
Feedback section of the web site before doing so. Sending one-line
reports saying `it doesn't work' will waste your time as much as
ours.
See the file LICENCE for the licence conditions.