Add kwarg post

.github/workflows/ci.yml

@@ -15,7 +15,6 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - '0.7' 
           - '1' # Leave this line unchanged. '1' will automatically expand to the latest stable 1.x release of Julia.
           - 'nightly'
         os:
@@ -66,4 +65,4 @@ jobs:
       - run: julia --project=docs docs/make.jl
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          DOCUMENTER_KEY: ${{ secrets.DOCUMENTER_KEY }}
+          DOCUMENTER_KEY: ${{ secrets.DOCUMENTER_KEY }}

Project.toml

@@ -2,7 +2,7 @@ name = "Latexify"
 uuid = "23fbe1c1-3f47-55db-b15f-69d7ec21a316"
 authors = ["Niklas Korsbo <[email protected]>"]
 repo = "https://github.com/korsbo/Latexify.jl.git"
-version = "0.15.14"
+version = "0.15.15"
 
 [deps]
 Formatting = "59287772-0a20-5a39-b81b-1366585eb4c0"

docs/src/index.md

@@ -211,6 +211,18 @@ x = 0.5
 "
 ```
 
+A special keyword `post` can be supplied to `@latexdefine`, which is a
+function that will be called on the final right hand sign before
+latexification. This is merely formatting and will not affect any assignments.
+
+```julia
+julia> @latexdefine x=π  post=round
+L"$x = \pi = 3.0$"
+
+julia> @latexdefine x
+L"$x = \pi$"
+```
+
 ## External rendering
 While LaTeXStrings already render nicely in many IDEs or in Jupyter, they do not render in the REPL. Therefore, we provide a function `render(str)` which generates a standalone PDF using LuaLaTeX and opens that file in your default PDF viewer.
 

src/macros.jl

@@ -62,6 +62,7 @@ end
 
 Latexify `expression`, followed by an equals sign and the return value of its evaluation.
 Any side effects of the expression, like assignments, are evaluated as well.
+The RHS can be formatted or otherwise transformed by supplying a function as kwarg `post`.
 
 # Examples
 ```julia-repl
@@ -73,16 +74,32 @@ y = \\frac{3}{2} + 1.5 = 3.0
 
 julia> y
 3.0
+
+julia> @latexdefine y=π post=round
+L"\$x = \\pi = 3.0\$"
 ```
 See also [`@latexify`](@ref), [`@latexrun`](@ref).
 """
 macro latexdefine(expr, kwargs...)
+    params = _extractparam.(kwargs)
+    post = :identity
+    for param in params
+        if param === :post
+            post = :post
+            break
+        end
+        if param isa Expr && param.args[1] === :post
+            post = param.args[2]
+            break
+        end
+    end
+
     return esc(
         Expr(
             :call,
             :latexify,
             Expr(:parameters, _extractparam.(kwargs)...),
-            Expr(:call, :Expr, QuoteNode(:(=)), Meta.quot(expr), _executable(expr)),
+            Expr(:call, :Expr, QuoteNode(:(=)), Meta.quot(expr), Expr(:call, post, _executable(expr))),
         ),
     )
 end

test/macros.jl

@@ -46,11 +46,18 @@ l12 = @latexrun x = 1 env=:raw
 l13 = @latexdefine y = x env=:raw
 @test l13 == raw"y = x = 1"
 
-#= # Loading a file with this in it doesn't work on VERSION < v"1.5.0"
 env = :raw
 l14 = @latexdefine y env
 @test l14 == raw"y = 1"
-=#
+
+l15 = @latexdefine y = x post=float
+@test l15 == raw"$y = x = 1.0$"
+@test y isa Integer
+
+post = x->round(x; sigdigits=3)
+l16 = @latexdefine y = π post
+@test l16 == raw"$y = \pi = 3.14$"
+@test y == π
 
 @test latexify(:(@hi(x / y))) == replace(
 raw"$\mathrm{@hi}\left( \frac{x}{y} \right)$", "\r\n"=>"\n")