API: nvim_set_keymap, nvim_del_keymap #9924

closes #9136

- Treat empty {rhs} like <Nop>

- getchar.c: Pull "repl. MapArg termcodes" into func
  The "preprocessing code" surrounding the replace_termcodes calls needs
  to invoke replace_termcodes, and also check if RHS is equal to "<Nop>".
  To reduce code duplication, factor this out into a helper function.

  Also add an rhs_is_noop flag to MapArguments; buf_do_map_explicit
  expects an empty {rhs} string for "<Nop>", but also needs to distinguish
  that from something like ":map lhs<cr>" where no {rhs} was provided.

- getchar.c: Use allocated buffer for rhs in MapArgs
  Since the MAXMAPLEN limit does not apply to the RHS of a mapping (or
  else an RHS that calls a really long autoload function from a plugin
  would be incorrectly rejected as being too long), use an allocated
  buffer for RHS rather than a static buffer of length MAXMAPLEN + 1.

- Mappings LHS and RHS can contain literal space characters, newlines, etc.

- getchar.c: replace_termcodes in str_to_mapargs
  It makes sense to do this; str_to_mapargs is, intuitively, supposed to
  take a "raw" command string and parse it into a totally "do_map-ready"
  struct.

- api/vim.c: Update lhs, rhs len after replace_termcodes
  Fixes a bug in which replace_termcodes changes the length of lhs or rhs,
  but the later search through the mappings/abbreviations hashtables
  still uses the old length value. This would cause the search to fail
  erroneously and throw 'E31: No such mapping' errors or 'E24: No such
  abbreviation' errors.

- getchar: Create new map_arguments struct
  So that a string of map arguments can be parsed into a more useful, more
  portable data structure.

- getchar.c: Add buf_do_map function
  Exactly the same as the old do_map, but replace the hardcoded references
  to the global `buf_T* curbuf` with a function parameter so that we can
  invoke it from nvim_buf_set_keymap.

- Remove gettext calls in do_map error handling

1 files changed, 1 insertions, 0 deletions

diff --git a/src/nvim/api/private/helpers.h b/src/nvim/api/private/helpers.h
index 0634764f13..cc74824402 100644
--- a/src/nvim/api/private/helpers.h
+++ b/src/nvim/api/private/helpers.h
@@ -5,6 +5,7 @@
 
 #include "nvim/api/private/defs.h"
 #include "nvim/vim.h"
+#include "nvim/getchar.h"
 #include "nvim/memory.h"
 #include "nvim/ex_eval.h"
 #include "nvim/lib/kvec.h"