added support for format pattern %g

README.md

@@ -39,7 +39,7 @@ You can use them using this syntax: `{1:%d}`. It will parse the first capturing
 The same method can also be applied to `%f` to further format floating point values.
 See a full list of formatting options at [Go's fmt spec](https://pkg.go.dev/fmt).
 
-Currently only `%s`, `%d` and `%f` are supported though.
+Currently only `%s`, `%d`, `%f` and `%g` are supported though.
 
 ### Mutators
 
@@ -234,15 +234,15 @@ Input:
 
 Command:
 ```sh
-format -i '(-?\d+) (-?\d+(?:.\d+)?)' -o '{1} + {2} = {1:%.2f:+(2)}'
+format -i '(-?\d+) (-?\d+(?:.\d+)?)' -o '{1} + {2} = {1:%g:+(2)}'
 ```
 
 Output:
 ```
-5 + 7 = 12.00
-3 + 2 = 5.00
-10 + 152 = 162.00
--15 + 3.7 = -11.30
+5 + 7 = 12
+3 + 2 = 5
+10 + 152 = 162
+-15 + 3.7 = -11.3
 ```
 
 ### Bulk renaming files

main.go

@@ -118,7 +118,7 @@ func replaceVars(format string, vars ...string) string {
 			value, _ := strconv.ParseInt(vars[varIndex], 10, 64)
 			mutate := numMut2func[int64](replacement[3])
 			format = strings.Replace(format, rplStr, fmt.Sprintf(rplFmt, mutate(value, vars)), 1)
-		} else if strings.HasSuffix(rplFmt, "f") { // replace floats
+		} else if strings.HasSuffix(rplFmt, "f") || strings.HasSuffix(rplFmt, "g") { // replace floats
 			value, _ := strconv.ParseFloat(vars[varIndex], 64)
 			mutate := numMut2func[float64](replacement[3])
 			format = strings.Replace(format, rplStr, fmt.Sprintf(rplFmt, mutate(value, vars)), 1)