fix slection error after deleting last element in stash (closes #223)

Author: Stephan Dilly

Diff for: CHANGELOG.md

@@ -1,25 +1,33 @@
 # Changelog
+
 All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
 
+### Fixed
+
+- selection error in stashlist when deleting last element ([#223](https://github.com/extrawurst/gitui/issues/223))
+
 ## [0.9.1] - 2020-07-30
 
 ### Added
-- move to (un)staged when the current selection is empty [[@jonstodle](https://github.com/jonstodle)] ([#215](https://github.com/extrawurst/gitui/issues/215))
+
+- move to (un)staged when the current selection is empty [[@jonstodle](https://github.com/jonstodle)](<[#215](https://github.com/extrawurst/gitui/issues/215)>)
 - pending load of a diff/status is visualized ([#160](https://github.com/extrawurst/gitui/issues/160))
 - entry on [git-scm.com](https://git-scm.com/downloads/guis) in the list of GUI tools [[@Vidar314](https://github.com/Vidar314)] (see [PR](https://github.com/git/git-scm.com/pull/1485))
-- commits can be tagged in revlog [[@cruessler](https://github.com/cruessler)] ([#103](https://github.com/extrawurst/gitui/issues/103))
+- commits can be tagged in revlog [[@cruessler](https://github.com/cruessler)](<[#103](https://github.com/extrawurst/gitui/issues/103)>)
 
 ![](assets/tagging.gif)
 
 ### Changed
+
 - async fetching tags to improve reactivity in giant repos ([#170](https://github.com/extrawurst/gitui/issues/170))
 
 ### Fixed
+
 - removed unmaintained dependency `spin` ([#172](https://github.com/extrawurst/gitui/issues/172))
 - opening relative paths in external editor may fail in subpaths ([#184](https://github.com/extrawurst/gitui/issues/184))
 - crashes in revlog with utf8 commit messages ([#188](https://github.com/extrawurst/gitui/issues/188))
@@ -34,10 +42,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [0.8.1] - 2020-07-07
 
 ### Added
-- open file in editor [[@jonstodle](https://github.com/jonstodle)] ([#166](https://github.com/extrawurst/gitui/issues/166))
+
+- open file in editor [[@jonstodle](https://github.com/jonstodle)](<[#166](https://github.com/extrawurst/gitui/issues/166)>)
 
 ### Fixed
-- switch deprecated transitive dependency `net2`->`socket2` [in `crossterm`->`mio`] ([#66](https://github.com/extrawurst/gitui/issues/66))
+
+- switch deprecated transitive dependency `net2`->`socket2` [in `crossterm`->`mio`](<[#66](https://github.com/extrawurst/gitui/issues/66)>)
 - crash diffing a stash that was created via cli ([#178](https://github.com/extrawurst/gitui/issues/178))
 - zero delta file size in diff of untracked binary file ([#171](https://github.com/extrawurst/gitui/issues/171))
 - newlines not visualized correctly in commit editor ([#169](https://github.com/extrawurst/gitui/issues/169))
@@ -47,48 +57,55 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [0.8.0] - 2020-07-06
 
 ### Added
-- core homebrew [formulae](https://formulae.brew.sh/formula/gitui#default): `brew install gitui` [[@vladimyr](https://github.com/vladimyr)] ([#137](https://github.com/extrawurst/gitui/issues/137))
+
+- core homebrew [formulae](https://formulae.brew.sh/formula/gitui#default): `brew install gitui` [[@vladimyr](https://github.com/vladimyr)](<[#137](https://github.com/extrawurst/gitui/issues/137)>)
 - show file sizes and delta on binary diffs ([#141](https://github.com/extrawurst/gitui/issues/141))
 
 ![](assets/binary_diff.png)
-- external editor support for commit messages [[@jonstodle](https://github.com/jonstodle)] ([#46](https://github.com/extrawurst/gitui/issues/46))
+
+- external editor support for commit messages [[@jonstodle](https://github.com/jonstodle)](<[#46](https://github.com/extrawurst/gitui/issues/46)>)
 
 ![](assets/vi_support.gif)
 
 ### Changed
+
 - use terminal blue as default selection background ([#129](https://github.com/extrawurst/gitui/issues/129))
 - author column in revlog is now fixed width for better alignment ([#148](https://github.com/extrawurst/gitui/issues/148))
 - cleaner tab bar and background work indicating spinner:
 
 ![](assets/spinner.gif)
 
 ### Fixed
+
 - clearer help headers ([#131](https://github.com/extrawurst/gitui/issues/131))
 - display non-utf8 commit messages at least partially ([#150](https://github.com/extrawurst/gitui/issues/150))
 - hooks ignored when running `gitui` in subfolder of workdir ([#151](https://github.com/extrawurst/gitui/issues/151))
-- better scrolling in file-trees [[@tisorlawan](https://github.com/tisorlawan)] ([#144](https://github.com/extrawurst/gitui/issues/144))
-- show untracked files in stash commit details [[@MCord](https://github.com/MCord)] ([#130](https://github.com/extrawurst/gitui/issues/130))
+- better scrolling in file-trees [[@tisorlawan](https://github.com/tisorlawan)](<[#144](https://github.com/extrawurst/gitui/issues/144)>)
+- show untracked files in stash commit details [[@MCord](https://github.com/MCord)](<[#130](https://github.com/extrawurst/gitui/issues/130)>)
 - in some repos looking up the branch name was a bottleneck ([#159](https://github.com/extrawurst/gitui/issues/159))
 - some optimizations in reflog
-- fix arrow utf8 encoding in help window [[@daober](https://github.com/daober)] ([#142](https://github.com/extrawurst/gitui/issues/142))
+- fix arrow utf8 encoding in help window [[@daober](https://github.com/daober)](<[#142](https://github.com/extrawurst/gitui/issues/142)>)
 
 ## [0.7.0] - 2020-06-15
 
 ### Added
+
 - Inspect stash commit in detail ([#121](https://github.com/extrawurst/gitui/issues/121))
 - Support reset/revert individual hunks ([#11](https://github.com/extrawurst/gitui/issues/11))
 - Commit Amend (`ctrl+a`) when in commit popup ([#89](https://github.com/extrawurst/gitui/issues/89))
 
 ![](assets/amend.gif)
 
 ### Changed
+
 - file trees: `arrow-right` on expanded folder moves down into folder
 - better scrolling in diff ([#52](https://github.com/extrawurst/gitui/issues/52))
 - display current branch in status/log ([#115](https://github.com/extrawurst/gitui/issues/115))
-- commit msg popup: add cursor and more controls (`arrow-left/right`, `delete` & `backspace`) [[@alistaircarscadden](https://github.com/alistaircarscadden)] ([#46](https://github.com/extrawurst/gitui/issues/46))
-- moved `theme.ron` from `XDG_CACHE_HOME` to `XDG_CONFIG_HOME` [[@jonstodle](https://github.com/jonstodle)] ([#98](https://github.com/extrawurst/gitui/issues/98))
+- commit msg popup: add cursor and more controls (`arrow-left/right`, `delete` & `backspace`) [[@alistaircarscadden](https://github.com/alistaircarscadden)](<[#46](https://github.com/extrawurst/gitui/issues/46)>)
+- moved `theme.ron` from `XDG_CACHE_HOME` to `XDG_CONFIG_HOME` [[@jonstodle](https://github.com/jonstodle)](<[#98](https://github.com/extrawurst/gitui/issues/98)>)
 
 ### Fixed
+
 - reset file inside folder failed when running `gitui` in a subfolder too ([#118](https://github.com/extrawurst/gitui/issues/118))
 - selection could disappear into collapsed folder ([#120](https://github.com/extrawurst/gitui/issues/120))
 - `Files: loading` sometimes wrong ([#119](https://github.com/extrawurst/gitui/issues/119))
@@ -98,97 +115,121 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ![](assets/commit-details.gif)
 
 ### Changed
+
 - changed hotkeys for selecting stage/workdir (**Note:** use `[w]`/`[s]` to change between workdir and stage) and added hotkeys (`[1234]`) to switch to tabs directly ([#92](https://github.com/extrawurst/gitui/issues/92))
 - `arrow-up`/`down` on bottom/top of status file list switches focus ([#105](https://github.com/extrawurst/gitui/issues/105))
 - highlight tags in revlog better
 
 ### Added
+
 - New `Stage all [a]`/`Unstage all [a]` in changes lists ([#82](https://github.com/extrawurst/gitui/issues/82))
-- add `-d`, `--directory` options to set working directory via program arg [[@alistaircarscadden](https://github.com/alistaircarscadden)] ([#73](https://github.com/extrawurst/gitui/issues/73))
+- add `-d`, `--directory` options to set working directory via program arg [[@alistaircarscadden](https://github.com/alistaircarscadden)](<[#73](https://github.com/extrawurst/gitui/issues/73)>)
 - commit detail view in revlog ([#80](https://github.com/extrawurst/gitui/issues/80))
 
 ### Fixed
+
 - app closes when staging invalid file/path ([#108](https://github.com/extrawurst/gitui/issues/108))
-- `shift+tab` not working on windows [[@MCord](https://github.com/MCord)] ([#111](https://github.com/extrawurst/gitui/issues/111))
+- `shift+tab` not working on windows [[@MCord](https://github.com/MCord)](<[#111](https://github.com/extrawurst/gitui/issues/111)>)
 
 ## [0.5.0] - 2020-06-01
 
 ### Changed
+
 - support more commands allowing optional multiline commandbar ([#83](https://github.com/extrawurst/gitui/issues/83))
 
 ![](assets/cmdbar.gif)
 
 ### Added
+
 - support adding untracked file/folder to `.gitignore` ([#44](https://github.com/extrawurst/gitui/issues/44))
 - support reverse tabbing using shift+tab ([#92](https://github.com/extrawurst/gitui/issues/92))
-- switch to using cmd line args instead of `ENV` (`-l` for logging and `--version`) **please convert your GITUI_LOGGING usage** [[@shenek](https://github.com/shenek)] ([#88](https://github.com/extrawurst/gitui/issues/88))
-- added missing LICENSE.md files in sub-crates [[@ignatenkobrain](https://github.com/ignatenkobrain)] ([#94](https://github.com/extrawurst/gitui/pull/94))
+- switch to using cmd line args instead of `ENV` (`-l` for logging and `--version`) **please convert your GITUI_LOGGING usage** [[@shenek](https://github.com/shenek)](<[#88](https://github.com/extrawurst/gitui/issues/88)>)
+- added missing LICENSE.md files in sub-crates [[@ignatenkobrain](https://github.com/ignatenkobrain)](<[#94](https://github.com/extrawurst/gitui/pull/94)>)
 
 ### Fixed
+
 - error when diffing huge files ([#96](https://github.com/extrawurst/gitui/issues/96))
 - expressive error when run in bare repos ([#100](https://github.com/extrawurst/gitui/issues/100))
 
 ## [0.4.0] - 2020-05-25
 
 ### Added
+
 - stashing support (save,apply,drop) ([#3](https://github.com/extrawurst/gitui/issues/3))
 
 ### Changed
+
 - log tab refreshes when head changes ([#78](https://github.com/extrawurst/gitui/issues/78))
 - performance optimization of the log tab in big repos
 - more readable default color for the commit hash in the log tab
-- more error/panic resiliance (`unwrap`/`panic` denied by clippy now) [[@MCord](https://github.com/MCord)] ([#77](https://github.com/extrawurst/gitui/issues/77))
+- more error/panic resiliance (`unwrap`/`panic` denied by clippy now) [[@MCord](https://github.com/MCord)](<[#77](https://github.com/extrawurst/gitui/issues/77)>)
 
 ### Fixes
+
 - panic on small terminal width ([#72](https://github.com/extrawurst/gitui/issues/72))
 
 ![](assets/stashing.gif)
 
 ## [0.3.0] - 2020-05-20
 
 ### Added
-- support color themes and light mode [[@MCord](https://github.com/MCord)] ([#28](https://github.com/extrawurst/gitui/issues/28))
+
+- support color themes and light mode [[@MCord](https://github.com/MCord)](<[#28](https://github.com/extrawurst/gitui/issues/28)>)
 
 ### Changed
+
 - more natural scrolling in log tab ([#52](https://github.com/extrawurst/gitui/issues/52))
 
 ### Fixed
+
 - crash on commit when git name was not set ([#74](https://github.com/extrawurst/gitui/issues/74))
 - log tab shown empty in single commit repos ([#75](https://github.com/extrawurst/gitui/issues/75))
 
 ![](assets/light-theme.png)
 
 ## [0.2.6] - 2020-05-18
+
 ### Fixed
+
 - fix crash help in small window size ([#63](https://github.com/extrawurst/gitui/issues/63))
 
 ## [0.2.5] - 2020-05-16
+
 ### Added
+
 - introduced proper changelog
-- hook support on windows [[@MCord](https://github.com/MCord)] ([#14](https://github.com/extrawurst/gitui/issues/14))
+- hook support on windows [[@MCord](https://github.com/MCord)](<[#14](https://github.com/extrawurst/gitui/issues/14)>)
 
 ### Changed
+
 - show longer commit messages in log view
-- introduce propper error handling in `asyncgit` [[@MCord](https://github.com/MCord)] ([#53](https://github.com/extrawurst/gitui/issues/53))
+- introduce propper error handling in `asyncgit` [[@MCord](https://github.com/MCord)](<[#53](https://github.com/extrawurst/gitui/issues/53)>)
 - better error message when trying to run outside of a valid git repo ([#56](https://github.com/extrawurst/gitui/issues/56))
 - improve ctrl+c handling so it is checked first and no component needs to worry of blocking it
 
 ### Fixed
+
 - support multiple tags per commit in log ([#61](https://github.com/extrawurst/gitui/issues/61))
 
 ## [0.2.3] - 2020-05-12
+
 ### Added
+
 - support more navigation keys: home/end/pageUp/pageDown ([#43](https://github.com/extrawurst/gitui/issues/43))
 - highlight current tab a bit better
 
 ## [0.2.2] - 2020-05-10
+
 ### Added
+
 - show tags in commit log ([#47](https://github.com/extrawurst/gitui/issues/47))
 - support home/end key in diff ([#43](https://github.com/extrawurst/gitui/issues/43))
 
 ### Changed
+
 - close application shortcut is now the standard `ctrl+c`
 - some diff improvements ([#42](https://github.com/extrawurst/gitui/issues/42))
 
 ### Fixed
+
 - document tab key to switch tabs ([#48](https://github.com/extrawurst/gitui/issues/48))

Diff for: src/components/commitlist.rs

@@ -79,6 +79,8 @@ impl CommitList {
     ///
     pub fn set_count_total(&mut self, total: usize) {
         self.count_total = total;
+        self.selection =
+            cmp::min(self.selection, self.selection_max());
     }
 
     ///