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feat: add preview functionality to user commands

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Adds a Lua-only `preview` flag to user commands which allows the command to be incrementally previewed like `:substitute` when 'inccommand' is set.
This commit is contained in:
Famiu Haque
2022-04-20 17:02:18 +06:00
parent e9803e1de6
commit 46536f53e8
25 changed files with 960 additions and 346 deletions
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11
src/nvim/ex_cmds_defs.h
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@@ -63,6 +63,7 @@
#define EX_MODIFY 0x100000 // forbidden in non-'modifiable' buffer
#define EX_FLAGS 0x200000 // allow flags after count in argument
#define EX_KEEPSCRIPT 0x4000000 // keep sctx of where command was invoked
#define EX_PREVIEW 0x8000000 // allow incremental command preview
#define EX_FILES (EX_XFILE | EX_EXTRA) // multiple extra files allowed
#define EX_FILE1 (EX_FILES | EX_NOSPC) // 1 file, defaults to current file
#define EX_WORD1 (EX_EXTRA | EX_NOSPC) // one extra word allowed
@@ -91,6 +92,7 @@ typedef struct exarg exarg_T;
#define BAD_DROP (-2) // erase it
typedef void (*ex_func_T)(exarg_T *eap);
typedef int (*ex_preview_func_T)(exarg_T *eap, long cmdpreview_ns, handle_T cmdpreview_bufnr);
// NOTE: These possible could be removed and changed so that
// Callback could take a "command" style string, and simply
@@ -125,10 +127,11 @@ typedef char *(*LineGetter)(int, void *, int, bool);
/// Structure for command definition.
typedef struct cmdname {
char *cmd_name; ///< Name of the command.
ex_func_T cmd_func; ///< Function with implementation of this command.
uint32_t cmd_argt; ///< Relevant flags from the declared above.
cmd_addr_T cmd_addr_type; ///< Flag for address type
char *cmd_name; ///< Name of the command.
ex_func_T cmd_func; ///< Function with implementation of this command.
ex_preview_func_T cmd_preview_func; ///< Preview callback function of this command.
uint32_t cmd_argt; ///< Relevant flags from the declared above.
cmd_addr_T cmd_addr_type; ///< Flag for address type.
} CommandDefinition;
// A list used for saving values of "emsg_silent". Used by ex_try() to save the