3 files changed, 16 insertions, 8 deletions
diff --git a/src/nvim/charset.c b/src/nvim/charset.c
index 5aebf90194..980b4ed426 100644
--- a/src/nvim/charset.c
+++ b/src/nvim/charset.c
@@ -1615,7 +1615,7 @@ bool vim_isblankline(char_u *lbuf)
 ///             hexadecimal, '0' = octal, 'b' or 'B' is binary. When using
 ///             STR2NR_FORCE is always zero.
 /// @param len Returns the detected length of number.
-/// @param what Recognizes what number passed.
+/// @param what Recognizes what number passed, @see ChStr2NrFlags.
 /// @param nptr Returns the signed result.
 /// @param unptr Returns the unsigned result.
 /// @param maxlen Max length of string to check.
diff --git a/src/nvim/charset.h b/src/nvim/charset.h
index c69582c4c6..7198c8d405 100644
--- a/src/nvim/charset.h
+++ b/src/nvim/charset.h
@@ -15,6 +15,21 @@
              ?((int)(uint8_t)(c)) \
              :((int)(c)))
 
+/// Flags for vim_str2nr()
+typedef enum {
+  STR2NR_DEC = 0,
+  STR2NR_BIN = (1 << 0),  ///< Allow binary numbers.
+  STR2NR_OCT = (1 << 1),  ///< Allow octal numbers.
+  STR2NR_HEX = (1 << 2),  ///< Allow hexadecimal numbers.
+  /// Force one of the above variants.
+  ///
+  /// STR2NR_FORCE|STR2NR_DEC is actually not different from supplying zero
+  /// as flags, but still present for completeness.
+  STR2NR_FORCE = (1 << 3),
+  /// Recognize all formats vim_str2nr() can recognize.
+  STR2NR_ALL = STR2NR_BIN | STR2NR_OCT | STR2NR_HEX,
+} ChStr2NrFlags;
+
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "charset.h.generated.h"
 #endif
diff --git a/src/nvim/vim.h b/src/nvim/vim.h
index 62ffc7433e..096c57450f 100644
--- a/src/nvim/vim.h
+++ b/src/nvim/vim.h
@@ -28,13 +28,6 @@
 /// length of a buffer to store a number in ASCII (64 bits binary + NUL)
 enum { NUMBUFLEN = 65 };
 
-// flags for vim_str2nr()
-#define STR2NR_BIN 1
-#define STR2NR_OCT 2
-#define STR2NR_HEX 4
-#define STR2NR_ALL (STR2NR_BIN + STR2NR_OCT + STR2NR_HEX)
-#define STR2NR_FORCE 8  // only when ONE of the above is used
-
 #define MAX_TYPENR 65535
 
 #define ROOT_UID 0