docs: update the ROOT documentation and error messages (#19832)

* docs: update the ROOT documentation and error messages

* The documentation now reflects what happens in the
  setting/repository.go::newRepository function:
  filepath.Join(AppWorkPath, RepoRootPath) was missing.

* The error message displayed when RepoRootPath is not found now
  displays the value of RepoRootPath. Given the complexity of the
  construction of this value, only referring to it in the abstract
  is likely to be misleading to the Gitea admin trying to interpret
  the message.

Co-authored-by: delvh <dev.lh@web.de>

cmd/serv.go

@@ -302,7 +302,7 @@ func runServ(c *cli.Context) error {
 	if _, err := os.Stat(setting.RepoRootPath); err != nil {
 		if os.IsNotExist(err) {
 			return fail("Incorrect configuration.",
-				"Directory `[repository]` `ROOT` was not found, please check if $GITEA_WORK_DIR is passed to the SSH connection or make `[repository]` `ROOT` an absolute value.")
+				"Directory `[repository]` `ROOT` %s was not found, please check if $GITEA_WORK_DIR is passed to the SSH connection or make `[repository]` `ROOT` an absolute value.", setting.RepoRootPath)
 		}
 	}
 

custom/conf/app.example.ini

@@ -813,7 +813,8 @@ PATH =
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;[repository]
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;; Root path for storing all repository data. It must be an absolute path. By default, it is stored in a sub-directory of `APP_DATA_PATH`.
+;; Root path for storing all repository data. By default, it is set to %(APP_DATA_PATH)/gitea-repositories.
+;; A relative path is interpreted as %(GITEA_WORK_DIR)/%(ROOT)
 ;ROOT =
 ;;
 ;; The script type this server supports. Usually this is `bash`, but some users report that only `sh` is available.

docs/content/doc/advanced/config-cheat-sheet.en-us.md

@@ -42,8 +42,8 @@ Values containing `#` or `;` must be quoted using `` ` `` or `"""`.
 
 ## Repository (`repository`)
 
-- `ROOT`: **data/gitea-repositories/**: Root path for storing all repository data. It must be
-   an absolute path. By default it is stored in a sub-directory of `APP_DATA_PATH`.
+- `ROOT`: **%(APP_DATA_PATH)/gitea-repositories**: Root path for storing all repository data.
+   A relative path is interpreted as **%(GITEA_WORK_DIR)/%(ROOT)**.
 - `SCRIPT_TYPE`: **bash**: The script type this server supports. Usually this is `bash`,
    but some users report that only `sh` is available.
 - `DETECTED_CHARSETS_ORDER`: **UTF-8, UTF-16BE, UTF-16LE, UTF-32BE, UTF-32LE, ISO-8859, windows-1252, ISO-8859, windows-1250, ISO-8859, ISO-8859, ISO-8859, windows-1253, ISO-8859, windows-1255, ISO-8859, windows-1251, windows-1256, KOI8-R, ISO-8859, windows-1254, Shift_JIS, GB18030, EUC-JP, EUC-KR, Big5, ISO-2022, ISO-2022, ISO-2022, IBM424_rtl, IBM424_ltr, IBM420_rtl, IBM420_ltr**: Tie-break order of detected charsets - if the detected charsets have equal confidence, charsets earlier in the list will be chosen in preference to those later. Adding `defaults` will place the unnamed charsets at that point.

docs/content/doc/help/faq.en-us.md

@@ -64,8 +64,9 @@ https://github.com/loganinak/MigrateGitlabToGogs
   - Unix: Environment variable `HOME`
   - Windows: Environment variable `USERPROFILE`, else environment variables `HOMEDRIVE`+`HOMEPATH`
 - RepoRootPath
-  - `ROOT` in `app.ini`
-  - Else `%(AppDataPath)/gitea-repositories`
+  - `ROOT` in the \[repository] section of `app.ini` if absolute
+  - Else `%(AppWorkPath)/ROOT` if `ROOT` in the \[repository] section of `app.ini` if relative
+  - Default `%(AppDataPath)/gitea-repositories`
 - INI (config file)
   - `-c` flag
   - Else `%(CustomPath)/conf/app.ini`