Rewrite Printf module

base/printf.jl

@@ -541,29 +541,6 @@ function format(f::Format, args...) # => String
     return unsafe_string(pointer(buf), pos-1)
 end
 
-"""
-    @printf([io::IOStream], "%Fmt", args...)
-
-Print `args` using C `printf` style format specification string, with some caveats:
-`Inf` and `NaN` are printed consistently as `Inf` and `NaN` for flags `%a`, `%A`,
-`%e`, `%E`, `%f`, `%F`, `%g`, and `%G`. Furthermore, if a floating point number is
-equally close to the numeric values of two possible output strings, the output
-string further away from zero is chosen.
-
-Optionally, an [`IOStream`](@ref)
-may be passed as the first argument to redirect output.
-
-See also: [`@sprintf`](@ref)
-
-# Examples
-```jldoctest
-julia> @printf("%f %F %f %F\\n", Inf, Inf, NaN, NaN)
-Inf Inf NaN NaN\n
-
-julia> @printf "%.0f %.1f %f\\n" 0.5 0.025 -0.0078125
-1 0.0 -0.007813
-```
-"""
 macro printf(io_or_fmt, args...)
     if io_or_fmt isa String
         io = stdout
@@ -577,19 +554,6 @@ macro printf(io_or_fmt, args...)
     end
 end
 
-"""
-    @sprintf("%Fmt", args...)
-
-Return `@printf` formatted output as string.
-
-# Examples
-```jldoctest
-julia> s = @sprintf "this is a %s %15.1f" "test" 34.567;
-
-julia> println(s)
-this is a test            34.6
-```
-"""
 macro sprintf(fmt, args...)
     f = Format(fmt)
     return esc(:(Base.Printf.format($f, $(args...))))

contrib/generate_precompile.jl

@@ -137,7 +137,9 @@ function generate_precompile_statements()
         # Extract the precompile statements from stderr
         statements = Set{String}()
         for statement in eachline(precompile_file_h)
-            occursin("Main.", statement) && continue
+            (occursin("Main.", statement) ||
+                occursin("Printf.", statement) ||
+                occursin("Base.io_has_tvar_name", statement)) && continue
             # check for `#x##s66` style variable names not in quotes
             occursin(r"#\w", statement) &&
                 count(r"(?:#+\w+)+", statement) !=

stdlib/Printf/src/Printf.jl

@@ -7,4 +7,44 @@ module Printf
 export @printf, @sprintf
 using Base.Printf
 
+"""
+    @printf([io::IOStream], "%Fmt", args...)
+
+Print `args` using C `printf` style format specification string, with some caveats:
+`Inf` and `NaN` are printed consistently as `Inf` and `NaN` for flags `%a`, `%A`,
+`%e`, `%E`, `%f`, `%F`, `%g`, and `%G`. Furthermore, if a floating point number is
+equally close to the numeric values of two possible output strings, the output
+string further away from zero is chosen.
+
+Optionally, an [`IOStream`](@ref)
+may be passed as the first argument to redirect output.
+
+See also: [`@sprintf`](@ref)
+
+# Examples
+```jldoctest
+julia> @printf("%f %F %f %F\\n", Inf, Inf, NaN, NaN)
+Inf Inf NaN NaN\n
+
+julia> @printf "%.0f %.1f %f\\n" 0.5 0.025 -0.0078125
+1 0.0 -0.007813
+```
+"""
+:(@printf)
+
+"""
+    @sprintf("%Fmt", args...)
+
+Return `@printf` formatted output as string.
+
+# Examples
+```jldoctest
+julia> s = @sprintf "this is a %s %15.1f" "test" 34.567;
+
+julia> println(s)
+this is a test            34.6
+```
+"""
+:(@sprintf)
+
 end # module