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Better placement of Fossil prompt info

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Instead of blindly tacking `$fossil_prompt_info` onto the end of the
prompt string and making assumptions about whether `$PROMPT` or
`$RPROMPT` are in use here, assume the user is using a theme that puts
`$git_prompt_info` in there somewhere and inject our info immediately
afterward.  The theme creator decided that's a good place for Git prompt
info, so that's a good place for Fossil prompt info, too.

This also replaces some calls out to `grep` with internal Zsh string
manipulation for less overhead.
This commit is contained in:
Warren Young 2022-08-29 23:17:11 -06:00
parent 6d48309cd7
commit 033b095212
1 changed files with 17 additions and 12 deletions
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29
plugins/fossil/fossil.plugin.zsh
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@ -35,18 +35,23 @@ function fossil_prompt_info() {
}
function _fossil_prompt () {
local current=`echo $PROMPT $RPROMPT | grep fossil`
if [ "$_FOSSIL_PROMPT" = "" -o "$current" = "" ]; then
local _prompt=${PROMPT}
local _rprompt=${RPROMPT}
local is_prompt=`echo $PROMPT | grep git`
if [ "$is_prompt" = "" ]; then
RPROMPT="$_rprompt"'$(fossil_prompt_info)'
else
PROMPT="$_prompt"'$(fossil_prompt_info) '
if [ -z "$_FOSSIL_PROMPT" ]; then
# Use substitutions to work out what other plugins and themes have
# done ahead of us so we don't duplicate their work.
#
# If $fossil_prompt_info isn't in the prompt strings already but we
# can find $git_prompt_info, put it immediately afterward so that
# one or the other appears in the prompt. We're gambling that you
# aren't in a directory that's a checkout for both a Git repo and a
# Fossil repo.
#
# Otherwise, don't guess about where the user wants our prompt info
# placed. They can edit their theme to place it manually.
if [ "${PROMPT/fossil_prompt_info//}" = "$PROMPT" ]; then
PROMPT="${PROMPT/git_prompt_info/git_prompt_info)\$(fossil_prompt_info}"
fi
if [ "${RPROMPT/fossil_prompt_info//}" = "$RPROMPT" ]; then
RPROMPT="${RPROMPT/git_prompt_info/git_prompt_info)\$(fossil_prompt_info}"
fi
_FOSSIL_PROMPT="1"