[archive] Add missing bzip2 extensions

We already had .tar.bz2, .tbz, .tbz2 and .bz2
We were missing .tar.bz and .bz

Noticed this in the pull request #308 by @Konfekt.

modules/archive/README.md

@@ -1,4 +1,4 @@
-Archive
+archive
 =======
 
 Provides `archive` and `unarchive` functions for easy archive manipulation.
@@ -11,18 +11,18 @@ Functions
   * `archive` generates an archive based on file extension. Syntax is `archive myarchive.tar.gz /path/to/archive`
   * `unarchive` unarchives a file based on the extension. Syntax is `unarchive myarchive.7z`
 
-Archive Formats
+Archive formats
 ---------------
 
 | Format | Requirements |
 | ------ | ------------ |
 | .tar | `tar` |
 | .tar.gz, .tgz | `tar` or `pigz` |
-| .tar.bz2, .tbz | `tar` or `pbzip2` |
+| .tar.bz, .tar.bz2, .tbz, .tbz2 | `tar` or `pbzip2` |
 | .tar.xz, .txz | `tar` with xz support |
 | .tar.zma, .tlz | `tar` with lzma support |
 | .gz | `gunzip` or `pigz` |
-| .bz2 | `bunzip2` or `pbzip2` |
+| .bz, .bz2 | `bunzip2` or `pbzip2` |
 | .xz | `unxz` |
 | .lzma | `unzlma` |
 | .Z | `uncompress` |

modules/archive/functions/archive

@@ -25,8 +25,8 @@ fi
 # near-liner decrease in compression time based on on the number of available cores.
 
 case "${archive_name}" in
-  (*.tar.gz|*.tgz) tar -cvf "${archive_name}" --use-compress-program="gzip" "${dir_to_archive}" ;;
-  (*.tar.bz2|*.tbz|*.tbz2) tar -cvf "${archive_name}" --use-compress-program="bzip2" "${dir_to_archive}" ;;
+  (*.tar.gz|*.tgz) tar -cvf "${archive_name}" --use-compress-program=gzip "${dir_to_archive}" ;;
+  (*.tar.bz|*.tar.bz2|*.tbz|*.tbz2) tar -cvf "${archive_name}" --use-compress-program=bzip2 "${dir_to_archive}" ;;
   (*.tar.xz|*.txz) tar --xz --help &>/dev/null && tar -cvJf "${archive_name}" "${dir_to_archive}" ;;
   (*.tar.lzma|*.tlz) tar --lzma --help &>/dev/null && tar -cvf "${archive_name}" --lzma "${dir_to_archive}" ;;
   (*.tar) tar -cvf "${archive_name}" "${dir_to_archive}" ;;
@@ -34,7 +34,7 @@ case "${archive_name}" in
   (*.rar) rar a "${archive_name}" "${dir_to_archive}" ;;
   (*.7z) 7za a "${archive_name}" "${dir_to_archive}" ;;
   (*.gz) print "${0}: .gz is only useful for single files, and does not capture permissions. Use .tar.gz" ;;
-  (*.bz2) print "${0}: .bzip2 is only useful for single files, and does not capture permissions. Use .tar.bz2" ;;
+  (*.bz|*.bz2) print "${0}: .bzip2 is only useful for single files, and does not capture permissions. Use .tar.bz2" ;;
   (*.xz) print "${0}: .xz is only useful for single files, and does not capture permissions. Use .tar.xz" ;;
   (*.lzma) print "${0}: .lzma is only useful for single files, and does not capture permissions. Use .tar.lzma" ;;
   (*) print "${0}: unknown archive type: ${archive_name}" ;;

modules/archive/functions/unarchive

@@ -20,14 +20,14 @@ local archive_name="${1:t}"
 
 case "${archive_name}" in
   (*.tar.gz|*.tgz) tar -xvzf "${archive_name}" ;;
-  (*.tar.bz2|*.tbz|*.tbz2) tar -xvjf "${archive_name}" ;;
+  (*.tar.bz|*.tar.bz2|*.tbz|*.tbz2) tar -xvjf "${archive_name}" ;;
   (*.tar.xz|*.txz) tar --xz --help &>/dev/null && tar --xz -xvf "${archive_name}" \
     || xzcat "${archive_name}" | tar xvf - ;;
   (*.tar.lzma|*.tlz) tar --lzma --help &>/dev/null && tar --lzma -xvf "${archive_name}" \
     || lzcat "${archive_name}" | tar xvf - ;;
   (*.tar) tar xvf "${archive_name}" ;;
   (*.gz) gunzip "${archive_name}" ;;
-  (*.bz2) bunzip2 "${archive_name}" ;;
+  (*.bz|*.bz2) bunzip2 "${archive_name}" ;;
   (*.xz) unxz "${archive_name}" ;;
   (*.lzma) unlzma "${archive_name}" ;;
   (*.Z) uncompress "${archive_name}" ;;