add PROMPT_SEPARATOR, PROMPT_DIRECTORY, and PROMPT_START/PROMPT_END (#2239152)

With thanks to Thomas M Steenholdt for suggesting and pushing for this

README.md

@@ -1,5 +1,7 @@
 # Simple colored bash prompt
 
+Defined in `/etc/profile.d/bash-color-prompt.sh`
+
 The prompt color theme can be customized simply by setting
 the `PROMPT_COLOR` envvar, and optionally `PROMPT_DIR_COLOR`.
 
@@ -9,18 +11,70 @@ and `PROMPT_COLOR='1;33;53'` is bright/bold yellow with overline.
 `PROMPT_DIR_COLOR` similarly changes the color of the working directory,
 which otherwise defaults to `PROMPT_COLOR`.
 
-The prompt can be bracketed to look more like the traditional Fedora prompt
-by setting `PROMPT_BRACKETS`.
+## Coloring Examples
 
-Set `prompt_color_force` (before source'ing) to force usage/updating of color PS1:
-by default it is only setup cautiously if `$TERM` ends in "color"
+```shell
+PROMPT_COLOR=0 # disable colors/attribs
+PROMPT_COLOR=1 # bold prompt
+PROMPT_COLOR=2 # dim prompt
+PROMPT_COLOR=4 # underline prompt
+PROMPT_COLOR='2;7' # dim reverse video
+PROMPT_COLOR='42' # green background
+PROMPT_COLOR='53' # overline separator
+PROMPT_COLOR='1;33;44' # bold yellow on blue
+PROMPT_COLOR='43;30' # black on yellow
+PROMPT_COLOR='1;32' # bold green
+PROMPT_COLOR='' # unset defaults to green
+```
+
+```shell
+eval $(grep ANSI_COLOR /etc/os-release)
+PROMPT_COLOR="$ANSI_COLOR"
+```
+
+See <https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_(Select_Graphic_Rendition)_parameters> for ANSI codes details.
+
+## More variables
+
+### `PROMPT_START` (optional)
+Displayed at the start of the prompt.
+
+### `PROMPT_SEPARATOR`
+Default: `PROMPT_SEPARATOR=':'`
+
+eg you can change it to `'\n` or `' \t\n'
+
+### `PROMPT_DIRECTORY`
+Default: `PROMPT_DIRECTORY='\w'`
+
+eg you can change it to `'\W'`
+
+### `PROMPT_ERROR`
+Set (eg `PROMPT_ERROR=1`) if you want to append red error exit code to
+the prompt.
+
+### `PROMPT_END`
+Displayed at the end of the prompt (before `\$`).
+
+## Traditional Red Hat prompt
+```
+PROMPT_START='['
+PROMPT_END=']'
+PROMPT_SEPARATOR=' '
+PROMPT_DIRECTORY='\W'
+PROMPT_COLOR='0'
+```
+
+## Sourcing
+Set `prompt_color_force` (before source'ing) to force usage/updating of color
+PS1: by default it is only setup cautiously if `$TERM` ends in "color"
 *and* PS1 is the fedora or bash default.
 
-Also you can set `PROMPT_ERROR` if you want to append red error exit code to the prompt.
+```shellsession
+$ prompt_color_force=1
+$ source /etc/profile.d/bash-color-prompt.sh
+```
 
-See `/etc/profile.d/bash-color-prompt.sh` for the actual script.
-
-Please open issues against [shell-color-prompt](https://src.fedoraproject.org/rpms/shell-color-prompt).
-
-## References
-See <https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_(Select_Graphic_Rendition)_parameters> etc for the ANSI codes.
+## Contribute
+Please open issues against
+[shell-color-prompt](https://src.fedoraproject.org/rpms/shell-color-prompt).

bash-color-prompt.sh

@@ -1,19 +1,4 @@
-# see also /usr/share/doc/bash-color-prompt/README.md
-
-# example colorings:
-# PROMPT_COLOR=0 # disable colors/attribs
-# PROMPT_COLOR=1 # bold prompt
-# PROMPT_COLOR=2 # dim prompt
-# PROMPT_COLOR=4 # underline prompt
-# PROMPT_COLOR='2;7' # dim reverse video
-# PROMPT_COLOR='42' # green background
-# PROMPT_COLOR='53' # overline separator
-# PROMPT_COLOR='1;33;44' # bold yellow on blue
-# PROMPT_COLOR='43;30' # black on yellow
-# PROMPT_COLOR='1;32' # bold green
-# PROMPT_COLOR='' # unset defaults to green
-
-# See <https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_(Select_Graphic_Rendition)_parameters> for ANSI codes
+# see /usr/share/doc/bash-color-prompt/README.md
 
 ## to truncate \w dirpath set:
 # PROMPT_DIRTRIM=3
@@ -21,6 +6,8 @@
 # only set for color terminals and if PS1 unchanged from bash or fedora defaults
 if [ '(' "$PS1" = "[\u@\h \W]\\$ " -o "$PS1" = "\\s-\\v\\\$ " ')' -a "${TERM: -5}" = "color" -o -n "${prompt_color_force}" ]; then
 
-    PS1='${PROMPT_BRACKETS:+[}\[\e[${PROMPT_COLOR:-32}m\]${container:+⬢ }\u@\h\[\e[0m\]:\[\e[${PROMPT_DIR_COLOR:-${PROMPT_COLOR:-32}}m\]\w${PROMPT_ERROR:+\[\e[0;31m\]${?#0}}\[\e[0m\]${PROMPT_BRACKETS:+]}\$ '
+    PROMPT_SEPARATOR=':'
+    PROMPT_DIRECTORY='\w'
+    PS1='${PROMPT_START@P}\[\e[${PROMPT_COLOR:-32}m\]${container:+⬢ }\u@\h\[\e[0m\]${PROMPT_SEPARATOR@P}\[\e[${PROMPT_DIR_COLOR:-${PROMPT_COLOR:-32}}m\]${PROMPT_DIRECTORY@P}${PROMPT_ERROR:+\[\e[0;31m\]${?#0}}\[\e[0m\]${PROMPT_END@P}\$ '
 
 fi

shell-color-prompt.spec

@@ -1,5 +1,5 @@
 Name:           shell-color-prompt
-Version:        0.2.1
+Version:        0.3
 Release:        1%{?dist}
 Summary:        Color prompt for bash shell
 
@@ -41,6 +41,11 @@ install -m 644 -D -t %{buildroot}%{profiledir} bash-color-prompt.sh
 
 
 %changelog
+* Mon Nov 13 2023 Jens Petersen <petersen@redhat.com> - 0.3-1
+- add PROMPT_SEPARATOR and PROMPT_DIRECTORY default variables (#2239152)
+- add optional PROMPT_START and PROMPT_END (replaces PROMPT_BRACKETS)
+- expand README.md
+
 * Sat Nov 11 2023 Jens Petersen <petersen@redhat.com> - 0.2.1-1
 - add a container ⬢ symbol prefix