better checks for get-template-for

render.rkt

@@ -183,6 +183,7 @@
   (complete-path? . -> . (or/c #f complete-path?))
   (match-define-values (source-dir _ _) (split-path source-path))
   (and (templated-source? source-path) ; doesn't make sense if it's not a templated source format
+      (let ([output-path (->output-path source-path)])
         (or ; Build the possible paths and use the first one that either exists, or has existing source (template, preproc, or null)
          (ormap (λ(p) (if (ormap file-exists? (list p (->template-source-path p) (->preproc-source-path p) (->null-source-path p))) p #f)) 
                (filter (λ(x) (->boolean x)) ; if any of the possibilities below are invalid, they return #f 
@@ -191,9 +192,9 @@
                          (let ([source-metas (cached-require source-path 'metas)])
                            (and ((->symbol world:template-meta-key) . in? . source-metas)
                                (build-path source-dir (select-from-metas (->string world:template-meta-key) source-metas))))) ; path based on metas
-                        (and (filename-extension (->output-path source-path)) (build-path (world:current-project-root) 
+                       (and (filename-extension output-path) (build-path (world:current-project-root) 
-                                    (add-ext world:default-template-prefix (get-ext (->output-path source-path)))))))) ; path to default template
+                                                                        (add-ext world:default-template-prefix (get-ext output-path))))))) ; path to default template
-        (build-path (world:current-server-extras-path) world:fallback-template)))) ; fallback template
+         (and (filename-extension output-path) (build-path (world:current-server-extras-path) (add-ext world:fallback-template-prefix (get-ext output-path)))))))) ; fallback template
 
 
 (define/contract (file-needed-rerequire? source-path)

scribblings/world.scrbl

@@ -90,8 +90,8 @@ The magic character that indicates a Pollen command, function, or variable. Init
 @defthing[world:default-template-prefix string?]
 Prefix of the default template. Initialized to @racket["template"].
 
-@defthing[world:fallback-template string?]
+@defthing[world:fallback-template-prefix string?]
-Name of the fallback template (i.e., the template used to render a Pollen markup file when no other template can be found). Initialized to @racket["fallback.html.pt"].
+Used to generate the name of the fallback template (i.e., the template used to render a Pollen markup file when no other template can be found). Prefix is combined with the output suffix of the source file. Initialized to @racket["fallback"].
 
 @defthing[world:template-meta-key symbol?]
 Meta key used to store a template name for that particular source file. Initialized to @racket['template].

server-extras/fallback.txt

@@ -0,0 +1 @@
+◊doc

world.rkt

@@ -28,7 +28,7 @@
 (define template-command-marker #\∂)
 
 (define default-template-prefix "template")
-(define fallback-template "fallback.html")
+(define fallback-template-prefix "fallback")
 (define template-meta-key "template")
 
 (define main-pollen-export 'doc) ; don't forget to change fallback template too