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authorTom Ryder <tom@sanctum.geek.nz>2017-01-25 14:31:32 +1300
committerTom Ryder <tom@sanctum.geek.nz>2017-01-25 14:31:32 +1300
commite3f97d6c12e6e311b155ce24ce586717b1abc18b (patch)
tree4d7f5c0556499331218bf2897ef04bc2962aca12
parenta03e567632b1104433c7f53768fc28566b42d438 (diff)
downloaddotfiles-e3f97d6c12e6e311b155ce24ce586717b1abc18b.tar.gz
dotfiles-e3f97d6c12e6e311b155ce24ce586717b1abc18b.zip
Show prompt prefix if a shell is exotic
That is, include e.g. "ksh:" as a prefix to the prompt if the user appears to have Bash or Zsh (or anything else) as their login shell. This is probably imperfect, but it's a start.
-rw-r--r--README.markdown3
-rw-r--r--bash/bashrc.d/prompt.bash6
-rw-r--r--ksh/kshrc.d/prompt.ksh14
-rw-r--r--zsh/zshrc.d/prompt.zsh6
4 files changed, 29 insertions, 0 deletions
diff --git a/README.markdown b/README.markdown
index 9c956d51..70234ed8 100644
--- a/README.markdown
+++ b/README.markdown
@@ -147,6 +147,9 @@ include these elements in this order:
You can set `PROMPT_COLOR`, `PROMPT_PREFIX`, and `PROMPT_SUFFIX` too, which all
do about what you'd expect.
+If you start up Bash, Ksh, or Zsh and it detects that it's not normally your
+`$SHELL`, the prompt will display an appropriate prefix.
+
This is all managed within the `prompt` function. There's some mildly hacky
logic on `tput` codes included such that it should work correctly for most
common terminals using both `termcap(5)` and `terminfo(5)`, including \*BSD
diff --git a/bash/bashrc.d/prompt.bash b/bash/bashrc.d/prompt.bash
index b22f118f..2bd70c2f 100644
--- a/bash/bashrc.d/prompt.bash
+++ b/bash/bashrc.d/prompt.bash
@@ -22,6 +22,12 @@ prompt() {
# Add sub-commands; VCS, job, and return status checks
PS1=$PS1'$(ret=$?;prompt vcs;prompt job;prompt ret)'
+ # Add a helpful prefix if this shell appears to be exotic
+ case ${SHELL##*/} in
+ (bash) ;;
+ (*) PS1=bash:$PS1 ;;
+ esac
+
# Add prefix and suffix
PS1='${PROMPT_PREFIX}'$PS1'${PROMPT_SUFFIX}'
diff --git a/ksh/kshrc.d/prompt.ksh b/ksh/kshrc.d/prompt.ksh
index bf77f626..09c7de6e 100644
--- a/ksh/kshrc.d/prompt.ksh
+++ b/ksh/kshrc.d/prompt.ksh
@@ -22,6 +22,20 @@ function prompt {
# count, and previous command return value
PS1=$PS1'$(ret=$?;jobc=$(jobs -p|sed -n '\''$='\'');prompt pwd;prompt vcs;prompt job;prompt ret;:)'
+ # Add a helpful prefix if this shell appears to be exotic
+ typeset ksh
+ case $KSH_VERSION in
+ (*'93'*) ksh=ksh93 ;;
+ (*'PD KSH'*) ksh=pdksh ;;
+ (*'MIRBSD KSH'*) ksh=mksh ;;
+ esac
+ case ${SHELL##*/} in
+ ('') ;;
+ (ksh) ;;
+ ("$ksh") ;;
+ (*) PS1=$ksh:$PS1 ;;
+ esac
+
# Add prefix and suffix
PS1='${PROMPT_PREFIX}'$PS1'${PROMPT_SUFFIX}'
diff --git a/zsh/zshrc.d/prompt.zsh b/zsh/zshrc.d/prompt.zsh
index cfac7ffd..f374dbec 100644
--- a/zsh/zshrc.d/prompt.zsh
+++ b/zsh/zshrc.d/prompt.zsh
@@ -18,6 +18,12 @@ prompt() {
# Add sub-commands; VCS, job, and return status checks
PS1=$PS1'$(ret=$?;prompt vcs;prompt job;prompt ret)'
+ # Add a helpful prefix if this shell appears to be exotic
+ case ${SHELL##*/} in
+ (zsh) ;;
+ (*) PS1=zsh:$PS1 ;;
+ esac
+
# Add prefix and suffix
PS1='${PROMPT_PREFIX}'$PS1'${PROMPT_SUFFIX}'