Track Typora

Typora ships no git repo and no per-platform feed beyond its changelog: the
Sparkle dev_update.xml carries the macOS dev channel and reports a different
version, and /releases/all scrapes an unrelated number, so the stanza reads
the version headings on /releases/linux.

It is an Electron app unpacked under /opt, so it is neither a package, an
AppImage nor a flatpak and none of the existing installed-version sources see
it. Add an OPT_JSON map reading the version out of a JSON file, keyed by
stanza name. Typora is currently its only entry; /opt was checked for others
before adding a generic scanner.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

1 files changed, 13 insertions, 1 deletions

diff --git a/nvtable b/nvtable
index 1eb008a..4955f92 100755
--- a/nvtable
+++ b/nvtable
@@ -49,6 +49,13 @@ declare -A REPO_ALIAS=(
   [metasploit-framework]="metasploit-framework-bin"
 )
 
+# Stanza name -> JSON file carrying the installed version, for apps unpacked
+# under /opt that are neither a package, an AppImage, nor a flatpak. Value is
+# "<path>:<jq filter>".
+declare -A OPT_JSON=(
+  [Typora]="/opt/Typora-linux-x64/resources/package.json:.version"
+)
+
 SHOW_ALL=0; NO_TAKE=0; NO_COLOR=0; NO_EMOJI=0
 for a in "$@"; do
   case "$a" in
@@ -140,7 +147,12 @@ if command -v flatpak >/dev/null 2>&1; then
 fi
 
 installed_of() {  # echoes "version" or "" ; handles alias + case-insensitive
-  local n=$1 cand v
+  local n=$1 cand v spec f
+  if [[ -n ${OPT_JSON[$n]:-} ]]; then
+    spec=${OPT_JSON[$n]}; f=${spec%%:*}
+    [[ -r $f ]] && v=$(jq -r "${spec#*:} // empty" "$f" 2>/dev/null) \
+                && [[ -n $v ]] && { echo "$v"; return; }
+  fi
   for cand in ${ALIAS[$n]:-$n}; do
     # Anchored lookup first: correct even when VERSION contains a dash.
     v=$(pkg_version "$cand") && { echo "$v"; return; }