[PATCH] Introduce ZCALC_HISTFILE

[Julian Prein <druckdev@protonmail.com>]

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Hi!

This is my first time submitting a patch, so please tell me if something about
the email or patch format should be changed.

Julian


From 31f9646d8125aa5495106af539cca7322123dcfe Mon Sep 17 00:00:00 2001
From: Julian Prein <druckdev@protonmail.com>
Date: Sat, 10 Sep 2022 01:10:16 +0200
Subject: [PATCH] Introduce ZCALC_HISTFILE

Make the location of the history file to which zcalc writes customizable
through the introduced variable `$ZCALC_HISTFILE`.

Update the documentation to mention this variable. The updated part used
to differ from the implementation as it did not mention `$ZDOTDIR`.

Signed-off-by: Julian Prein <druckdev@protonmail.com>
---
 Doc/Zsh/contrib.yo   | 6 ++++--
 Functions/Misc/zcalc | 2 +-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/Doc/Zsh/contrib.yo b/Doc/Zsh/contrib.yo
index 0ef59dbc9ca5..0bc7859b1683 100644
--- a/Doc/Zsh/contrib.yo
+++ b/Doc/Zsh/contrib.yo
@@ -3972,8 +3972,10 @@ calculation is stored.  For example, the result of the calculation on the
 line preceded by `tt(4> )' is available as tt($4).  The last value
 calculated is available as tt(ans).  Full command line editing, including
 the history of previous calculations, is available; the history is saved in
-the file tt(~/.zcalc_history).  To exit, enter a blank line or type `tt(:q)'
-on its own (`tt(q)' is allowed for historical compatibility).
+the file tt($ZCALC_HISTFILE).  If tt($ZCALC_HISTFILE) is unset,
+tt($ZDOTDIR/.zcalc_history) is used instead.  To exit, enter a blank line
+or type `tt(:q)' on its own (`tt(q)' is allowed for historical
+compatibility).
 

 A line ending with a single backslash is treated in the same fashion
 as it is in command line editing:  the backslash is removed, the
diff --git a/Functions/Misc/zcalc b/Functions/Misc/zcalc
index 480373345124..397aa3cc1d4e 100644
--- a/Functions/Misc/zcalc
+++ b/Functions/Misc/zcalc
@@ -125,7 +125,7 @@ integer _max_stack _push
 local -a _expressions stack
 

 # We use our own history file with an automatic pop on exit.
-history -ap "${ZDOTDIR:-$HOME}/.zcalc_history"
+history -ap "${ZCALC_HISTFILE:-${ZDOTDIR:-$HOME}/.zcalc_history}"
 

 _forms=( '%2$g' '%.*g' '%.*f' '%.*E' '')
 

-- 

2.25.1

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