4 files changed, 27 insertions(+), 13 deletions(-)

M lua/telescope/_extensions/repo/cached_list.lua
M lua/telescope/_extensions/repo/health.lua
M lua/telescope/_extensions/repo/list.lua
M lua/telescope/_extensions/repo/utils.lua

@@ 7,7 7,7 @@ local utils = require("telescope._extensions.repo.utils")
 M.prepare_command = function(opts)
     opts = opts or {}
     opts.bin = opts.bin or utils.find_locate_binary()
-    if opts.bin == "" then
+    if not opts.bin then
         error("Please install locate (or one of its alternatives)")
     end
     opts.cwd = vim.env.HOME

@@ 46,7 46,7 @@ end
 
 local function check_list_cmd()
     local fd_bin = utils.find_fd_binary()
-    if fd_bin ~= "" then
+    if fd_bin then
         health.report_ok("fd: found `" .. fd_bin .. "`\n" .. get_version(fd_bin))
 
         local opts = {}


@@ 59,7 59,7 @@ end
 
 local function check_cached_list_cmd()
     local locate_bin = utils.find_locate_binary()
-    if locate_bin ~= "" then
+    if locate_bin then
         health.report_ok("locate: found `" .. locate_bin .. "`\n" .. get_version(locate_bin))
 
         local opts = {}


@@ 81,16 81,26 @@ end
 
 local function check_previewer()
     local markdown_bin = utils.find_markdown_previewer_for_document("test_doc.md")
-    if markdown_bin[1] ~= utils._markdown_previewer[1][1] then
-        health.report_warn("Install `" .. utils._markdown_previewer[1][1] .. "` for a better preview of markdown files")
+    if not markdown_bin then
+        health.report_error("No markdown previewer found, the extension will not work properly")
+    else
+        health.report_ok("Will use `" .. markdown_bin[1] .. "` to preview markdown READMEs")
+
+        if markdown_bin[1] ~= utils._markdown_previewer[1][1] then
+            health.report_warn("Install `" .. utils._markdown_previewer[1][1] .. "` for a better preview of markdown files")
+        end
     end
-    health.report_ok("Will use `" .. markdown_bin[1] .. "` to preview markdown READMEs")
 
     local generic_bin = utils.find_generic_previewer_for_document("test_doc")
-    if generic_bin[1] ~= utils._generic_previewer[1][1] then
-        health.report_warn("Install `" .. utils._generic_previewer[1][1] .. "` for a better preview of other files")
+    if not generic_bin then
+        health.report_error("No markdown previewer found, the extension will not work properly")
+    else
+        health.report_ok("Will use `" .. generic_bin[1] .. "` to preview non-markdown READMEs")
+
+        if generic_bin[1] ~= utils._generic_previewer[1][1] then
+            health.report_warn("Install `" .. utils._generic_previewer[1][1] .. "` for a better preview of other files")
+        end
     end
-    health.report_ok("Will use `" .. generic_bin[1] .. "` to preview non-markdown READMEs")
 end
 
 M.check = function()

@@ 7,7 7,7 @@ local utils = require("telescope._extensions.repo.utils")
 M.prepare_command = function(opts)
     opts = opts or {}
     opts.bin = opts.bin or utils.find_fd_binary()
-    if opts.bin == "" then
+    if not opts.bin then
         error("fd not found, is fd installed?")
     end
     opts.cwd = vim.env.HOME

@@ 9,7 9,7 @@ local function find_binary(binaries)
             return vim.deepcopy(binary)
         end
     end
-    return ""
+    return nil
 end
 
 -- Find under what name fd is installed.


@@ 26,7 26,9 @@ M._generic_previewer = { { "bat", "--style", "header,grid" }, { "cat" } }
 
 M.find_generic_previewer_for_document = function(doc)
     local l = find_binary(M._generic_previewer)
-    table.insert(l, doc)
+    if l then
+        table.insert(l, doc)
+    end
     return l
 end
 


@@ 35,7 37,9 @@ vim.list_extend(M._markdown_previewer, M._generic_previewer)
 
 M.find_markdown_previewer_for_document = function(doc)
     local l = find_binary(M._markdown_previewer)
-    table.insert(l, doc)
+    if l then
+        table.insert(l, doc)
+    end
     return l
 end