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feat: Added 'footnotes' markdown extension.

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Spencer Brower
2026-08-04 14:34:13 -04:00
parent fde54c1f94
commit 695548bada
7 changed files with 234 additions and 13 deletions
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markdown/markdown.odin
+22 -4
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@@ -3,6 +3,7 @@ package markdown
import cm "vendor:commonmark"
import "core:encoding/json"
import "core:log"
import "core:strings"
Extension :: enum {
@@ -13,6 +14,7 @@ Extension :: enum {
Sections,
HeadingIDs,
DefLists,
Footnotes,
}
DEFAULT_EXTENSIONS :: bit_set[Extension]{.Emoji, .Sidenotes, .Alerts, .HeadingIDs, .DefLists}
@@ -27,7 +29,7 @@ process :: proc(
side_notes := make(map[string]string)
margin_notes := make(map[string]string)
clean_body := body
if .Sidenotes in ext {
if .Sidenotes in ext || .Footnotes in ext {
clean_body, side_notes, margin_notes = strip_definitions(body)
}
if .DefLists in ext {
@@ -40,7 +42,9 @@ process :: proc(
if .Emoji in ext {
html = expand_emoji(html)
}
if .Sidenotes in ext {
if .Footnotes in ext {
html = inject_footnotes(html, side_notes, margin_notes)
} else if .Sidenotes in ext {
html = inject_notes(html, side_notes, margin_notes)
}
if .Alerts in ext {
@@ -63,8 +67,11 @@ parse_extension_list :: proc(s: string) -> (result: bit_set[Extension]) {
for part in strings.split(s, ",", allocator = context.temp_allocator) {
name := strings.to_lower(strings.trim_space(part), allocator = context.temp_allocator)
e, ok := extension_from_name(name)
if !ok && name != "" {
panic("!ok") // TODO: handle this
if !ok {
if name != "" {
log.warnf("unknown extension '%s'", name)
}
continue
}
result += {e}
}
@@ -103,6 +110,8 @@ extension_from_name :: proc(name: string) -> (e: Extension, ok: bool) {
e = .HeadingIDs
case "deflists":
e = .DefLists
case "footnotes":
e = .Footnotes
case:
// Do nothing
}
@@ -110,3 +119,12 @@ extension_from_name :: proc(name: string) -> (e: Extension, ok: bool) {
return e, ok || e != .Emoji
}
// resolve_extension_conflicts resolves mutually exclusive extensions.
// Footnotes and Sidenotes share the same [^id] syntax but render differently;
// if both are enabled (e.g. from defaults + CLI), Footnotes wins.
resolve_extension_conflicts :: proc(ext: ^bit_set[Extension]) {
if .Footnotes in ext^ && .Sidenotes in ext^ {
ext^ -= {.Sidenotes}
}
}