vim-patch:8.2.0915: search() cannot skip over matches like searchpair() can

Problem:    Search() cannot skip over matches like searchpair() can.
Solution:   Add an optional "skip" argument. (Christian Brabandt, closes vim/vim#861)
https://github.com/vim/vim/commit/adc17a5f9d207fd1623fd923457a46efc9214777

Enable skip arg usage in autoload/freebasic.vim

evalarg_T doesn't really matter because it's deleted in v8.2.0918 (and
reincarnated for Vim9 script in v8.2.1047), but I found out too late :P Anyway:

- Port evalarg_T into eval.h and use const char * and Callback fields
- Use EVALARG_INIT to initialize
- Return bool over OK/FAIL from evalarg functions
- Remove check from evalarg_clean as callback_free ignores None callbacks anyway
- Move eva_buf field into evalarg_get as a local (not sure what reason it has
  being in the struct)

N/A patches for version.c:

vim-patch:8.2.4355: unnecessary call to check_colorcolumn()

Problem:    Unnecessary call to check_colorcolumn().
Solution:   Remove the call. (Sean Dewar, closes vim/vim#9748)
https://github.com/vim/vim/commit/0f7ff851cb721bb3c07261adbf82b591229f530d

1 files changed, 16 insertions, 0 deletions

diff --git a/src/nvim/eval.h b/src/nvim/eval.h
index a9ec5d47a6..f74f23d084 100644
--- a/src/nvim/eval.h
+++ b/src/nvim/eval.h
@@ -272,6 +272,22 @@ typedef int (*ex_unletlock_callback)(lval_T *, char_u *, exarg_T *, int);
 // Used for checking if local variables or arguments used in a lambda.
 extern bool *eval_lavars_used;
 
+/// Function argument that can be a string, funcref or partial.
+/// - declare:  evalarg_T name;
+/// - init:     name = EVALARG_INIT;
+/// - set:      evalarg_get(&argvars[3], &name);
+/// - use:      if (evalarg_valid(&name)) res = evalarg_call(&name);
+/// - cleanup:  evalarg_clean(&name);
+typedef struct {
+  const char *eva_string;
+  Callback eva_callback;
+} evalarg_T;
+
+#define EVALARG_INIT (evalarg_T) { \
+  .eva_string = NULL, \
+  .eva_callback = CALLBACK_NONE, \
+}
+
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "eval.h.generated.h"
 #endif